Bigger is Better: Glock 40 GEN4 MOS 10MM

Love the long slide? Than this is the GLOCK for you.

Love the long slide? Than this is the GLOCK for you.

Check out the GLOCK 40:

Buy a 10mm GLOCK on GunsAmerica: /GLOCK 10mm

Bigger Can Be Better

Make no mistake; this gun is full-sized. The buzz for the last few years has been around small, concealed carry pistols. The GLOCK 40 GEN4 MOS 10mm is not a concealed carry pistol. However, it is something very special. A powerful gun suitable for serious hunting and self-defense in the back country from both 2 and 4-legged predators. On the range, with the correct load and an optic installed, this could be a serious competitive handgun.

GLOCKK 40 Specs.tiff

Big. Heavy. Impressive. No hiding these simple facts.

A Caliber I Can Learn to Love

This gun comes to you in the neglected caliber of 10mm. Shooting it with 10mm American Eagle 180 grain FMJ, the recoil is less than the snap of the GLOCK 22 in 40 S&W with a comparable load. Changing rounds to something like oh… I don’t know, the Hornady 155gr XTP (leaving the muzzle at 1250 FPS), you now have a handgun for serious purposes. One more ammo change to Cor Bon 200gr RNPN hunter loads and even black bear begin to get scared. Without going to a revolver, I have trouble finding another round that can deliver all this. Did I mention that each of the magazines pack 15 rounds of your choice? Compare that with 13 rounds 45ACP for the GLOCK 21 and you’ll begin to see the potential.

Two cases in the air, and two shots on target. The GLOCK 40 can be both fast and accurate.

Two cases in the air, and two shots on target. The GLOCK 40 can be both fast and accurate.

The Difference at the Range

I loaded the gun with the American Eagle 180 grain FMJ and fired 6 rounds at 7 yards from a two-handed stance and was rewarded with a 1.22” grouping. I was not only impressed with the precision of the GLOCK 40, but how soft-shooting and controllable the pistol was. I had no problem delivering “A” zone hits with splits within 2 tenths of a second. This gun will fit in the IDPA box and will make a solid competition gun.

The placement of the rear sight allows for an optimal placement of the MOS plates. You don't have to lose the rear sight to add a red-dot.

The placement of the rear sight allows for an optimal placement of the MOS plates. You don’t have to lose the rear sight to add a red-dot.

I asked experienced shooters to take a turn on this blaster and–without fail–they all noted the manageable recoil and how fun the gun was to shoot. There was a necessary adjustment to the size of the gun but this passed quickly once the brass began to fly.

There is recoil, and the gun is prone to muzzle-rise and torque. If you don’t have a solid grip, the barrel end rises significantly and twists counter clockwise (from the 12:00 position to the 10:45-11:00). Hold it firmly, though, and the recoil is as easily managed most compact autos.

Modular Plastic

The box I opened was a veritable shooting smorgasbord. First, the obvious: Generation 4 comes with 5 back strap possibilities. I quickly found that the medium back strap with a beavertail was perfect for me. As the grip is housing 15 rounds of 10mm, having some way to adjust girth is a real bonus. You will find that the grip is big, regardless, but it is manageable.

And the sights are a step up from what you typically find on a GLOCK.

And the sights are a step up from what you typically find on a GLOCK.

Next: the factory adjustable sights. Great feature for a handgun whose load versatility will have many different points of impact. The rear sight hangs off the back a bit, which doesn’t inspire confidence–though the style has been thoroughly tested and holstering and other abuses don’t seem to shake it.

Saving the best for last, the plate in front of the rear sight is removable. Remove the plate and choose from one of the 4 interchangeable mounts. This is the Modular Optic System (MOS) of the title. These allow installation of your favorite red dot optic. You can choose optics from DOCTER / INSIGHT / MEOPTA/ TRIJICON /LEUPOLD. You can add tall sights to co-witness the optic, providing backup in case of optic failure.

All in all, the GLOCK shoots incredibly well out of the box. With the MOS system, and the incredible diversity of aftermarket sights, there is no reason why you shouldn’t be able to tailor this gun’s sight system to your exact needs.

A Hunting Pistol

We haven’t gotten too deep into the intended purpose of this gun. Competition, yes–but that may be a bit of a long shot. The 10mm round is expensive, and could be overkill for most pistol shooters. Then there’s the obvious potential for self-defense. If you don’t mind carrying around this hunk of steel, than this would be an ideal self-defense gun. But it won’t be as fast from the holster as lighter, smaller GLOCKs, and it won’t be easy to conceal. So who will the 40 appeal to instantly?

The GLOCK 40 just screams to be taken to the field. Loaded with the Buffalo Boar flat point heavy bullets, any self-respecting Razorback boar is sure to fall out of respect for this hog hunter. I am already planning on adding a reflex sight. This should extend the range out to most shots found in the wooded hills of the Ozark National Forest. With a rig to carry the gun, and magazines for the hunt, I will be good to go. I am thinking the Galco Great Alaskan Shoulder System or maybe a Kenai Chest Holster from Gunfighter, Inc. Both of the images below show revolvers, but the G40 is an automatic that could rival the terminal ballistics of the big wheel guns, and smoke them when it comes to capacity.

The Great Alaskan has the benefit of being worn over outerwear, which means no fumbling for the gun under a coat on a cold weather hunt.

The Great Alaskan has the benefit of being worn over outerwear, which means no fumbling for the gun under a coat on a cold weather hunt.

The Kenai, like the peninsula itself, appeals to fishermen. The high-up placement keeps the gun out of the water for those who want or need to wade.

The Kenai, like the peninsula itself, appeals to fishermen. The high-up placement keeps the gun out of the water for those who want or need to wade.

The Big Bottom Line

This gun is one that stands out in the sea of black plastic for good reasons. I only gave the G41 a yawn when I took a turn on it following its roll out. The G40 is packed with the right set of options, full of real potential for the range and woods. The thing you have to know is this is not a concealed carry gun for most folks, as it is big, wide and heavy. It can be done but most will not put out the effort.

The G40 is a beast. Up against some of the other GLOCKs, the 40 shows its size.

The G40 is a beast. Up against some of the other GLOCKs, the 40 shows its size.

And this is how it shoots. Keep in mind that we haven't tested our typical varitey of loads, or matched a bullet shape to the gun for performance purposes. This is what we got on our opening warm-ups.

And this is how it shoots. Keep in mind that we haven’t tested our typical varitey of loads, or matched a bullet shape to the gun for performance purposes. This is what we got on our opening warm-ups.

This is that one special occasion gun that will shine where your EDC gun will be found lacking. The GLOCK 40 is a pricey plastic pistol. New, it has a $700.00 price tag (plus another $700.00 to add a Trijicon RMR). You could save some on the optic if you choose. Finally, don’t forget the ammunition. 10mm is getting easier to find, but it is hardly ubiquitous. I laid out $100.00 on 3 boxes (the only boxes in-stock at my very well stocked FFL). So when you consider the cost, consider what you’ll need to both maximize its potential and keep it running.

The lingering questions

We’re thrilled to get the GLOCK 40 in hand. Unlike a lot of the pistols we get in, we all fought over this one. Not only is it a GLOCK (a brand that has earned our respect), but it is a 10mm–and that’s a round that stirs up some debate. It is a hard hitting round, when done right. But most of the off-the-shelf 10mm seems to be seriously anemic. The muzzle velocities are almost shockingly low. Why is that? Is the honest-to-God, Real-Deal-Holyfield 10mm so big and bad that we couldn’t handle it? Why dumb it down? I thought that was the whole point behind the very existence of the .40 S&W!

Well we intend to find out. After feeding the GLOCK 40 some over-the-counter 10mm, we sought the hard stuff. Cor-Bon and Buffalo Bore have sent up a couple of loads that should really push the limits of the gun.

So we’ll be back soon with some big-bore gel destruction. Stay tuned. And we won’t stop there. All you Arkansas fans can holler Woo-Pig-Sooie all you want, but there are some razorbacks that are about to be guinea pigs. And keep all your judgmental bullshit to yourself. We’ll be hunting in the name of science. Very tasty science.

And we’ve got red-dots in-bound, too. So once we know what the 10mm is capable of producing, we’ll see how the optics stand up to the abuse.

The G40 is hardly compact, but remains ergonomic despite its size.

The G40 is hardly compact, but remains ergonomic despite its size.

The MOS plates for different optics.

The MOS plates for different optics.

{ 83 comments… add one }
  • Michael August 8, 2017, 2:07 pm

    We carry the 17 for our duty weapon as PO here in Hawaii and I love it. We switched over from S&W about 2 years ago and loved that weapon too. The Glock is so light which is a big advantage over S&W due to all of the other gear they make us carry on our belts. The reliability, however, is what I really like. Our swat guys were the testers and the instructor during the transition said he put several thousand rounds through it without cleaning it just for a test and never had a malfunction of any type. The rest of his crew echoed those results. Living in HI it may not seem that we would have much in the way of adverse weather to dirty the weapon but we get a lot of rain, wind and the salt in the air is corrosive to everything, not to mentioned sand and dirt yet this pistol did not fail. And did I mention that this gun is a pleasure to shoot. That is why I am buying the 40,10mm. I will use it here for pigs, in Alaska when I guide fisherman and probably for some small game hunting elsewhere and as a back up when rifle or bow hunting. It may not be perfect for everything but I do think it will come in handy so therefore a justifiable purchase.

  • Nicole June 17, 2017, 12:16 am

    I will also have a shoulder holster for each take away

  • Stepcof January 28, 2016, 8:03 pm

    10mm Double Tap Ammo 180gr. @ 1305fps/ 681 ft/lbs- 5.0″ bbl Controlled expansion.AND 1136fps / 516 ft lbs 100yds 5.0″ bbl.. Crazy powerful round! I love it.
    Killed two white tail deer this year with my Glock 20SF with after market 5.25″ Lone Wolfe Barrel, open sights. Plenty of power. Didn’t have to track more than 40 yards. I used to Hunt with my Performance shop S&W .44Mag 7.5″, Barrel but only one cylinder was accurate so I had to mark the cylinder and rotate the wheel for a good first shot (that was a waste of money). But killed a lot of deer with it out to 98yds until I found the Glock 20 (easy 100yd deer gun) I was looking for a Delta Elete 10mm, but I could buy 2 glock 20’s for the same price. I also purchased Lone Wolfe Barrels in 357sig and .40 cal for the same gun. Uses the same magazine! 3 guns for the price of one! Best gun for the money. Now I’m looking for a MOS slide for my G20. I just wish I could use it for my EDC (currently Kahr PM9-another awesome gun for the money).

    • Tommygun851 December 29, 2016, 2:17 pm

      To: Stepcof- My SuperBlackHawk had a similar problem as your S&W. If you “mic” up some dimensions on your revolver you will probably find that the cylinder throats are a smaller diameter than the groove diameter of the barrel! This is a more common problem than you can ever imagine! The bullet gets sized down before it enters the barrel then “rattles” down it! Lead bullets suffer the worst and jacketed ones bounce back and are a little more forgiving. You can fix this problem by taking a narrow bolt about 3″ long and cutting it in half down its length about half way down. Once you have split the bolt put it in a drill and get a piece of 320 grit sandpaper slip it into the split and turn the drill on so the paper spirals up and fits the cylinder snugly. Work from the front of the cylinder a little at a time measuring so the throat becomes the groove diameter of the barrel. It’s ok to make it “slightly” larger but only very little. I took it one step further and “fire” lapped the gun with almost 100 rounds of lap compound coated bullets. That was the first pistol that I ever bought! The second one that I bought was a S&W 1066 in 10mm. The model #1076 was the one the FBI was using after they’re 9mm Florida fiasco! Same gun except no hammer drop safety rendering the fed’s gun a DAO. I LOVE both guns and will have them until the day I die!

  • Shiva105 January 20, 2016, 3:15 pm

    The Glock Model 40 absolutely does NOT fit in an IDPA box. A simple comparison of the specs from Glock’s web site and the dimensions of an IDPA box form the IDPA rulebook would have shown that. As for the sights, I believe that they are the same adjustable sights that are available on every other model. My model 40 came with the standard fixed sights, however.

    • Jeepman007 April 12, 2016, 8:06 am

      Not all competitions revolve around IDPA/IPSC

      • Dewey September 12, 2016, 10:22 pm

        The “author” clearly states that it will fit the IDPA box. But he’s challenged by “than” and “then”.

  • Josh January 4, 2016, 6:29 am

    I traded in my glock 20. 10 mm. For a heavier glock 40 mos. I live in the 49th state. See moose, grizzly, black bears. You name it. I’m a gun man. I’ve successfully scared off moose. With yelling and dogs alone. And been charged by aggressive moose mamas, and brown bears. Who really just wanted the salmon I just caught. I’m a lover of my new g40 mos. I did the trade off because of the fact I have arthritis. And the heavy recoil of a large bore handgun hurts. I love the heaviness of the frame. I want non biased info on this firearm. That includes ” non anemic” ammo. I’m talking about buffalo bore, 220grain bear load. The 40 sw. Maybe close to the 10mm. But I don’t shoot 40 sw. Not a damn person in the firearms community up here does. And yes I know the 40sw. Is a slightly necked down version of the 10mm. I’m asking for an unbiased answer to my question. And I don’t take ” arthritis? You shouldn’t enjoy the land I was born in.” As an answer.

    • Chris April 7, 2016, 9:45 pm

      10mm and 40s&w are the same caliber 10mm is longer and has a magnum primer. Quit making Alaskans sound like dumbasses…

  • Victor Sniphalotapus November 26, 2015, 11:23 am

    You could just buy an extended barrel for your Glock 20 or 29 and not have to deal with that silly long slide\frame. The only thing you’d be giving up is about an inch of site radius big whoop.

    • Bob schwent June 17, 2016, 9:52 pm

      I have the G20, G29, Ruger Blackhawk, and Colt Delta Elite in 10mm. I’m a hardcore 1911 fan, but for everyday concealed carry I grab the Glock 29 because of it’s size and concealability. For hunting I grab the Ruger, but the best all around is a toss up between the Delta and the G20.

  • george August 27, 2015, 7:25 pm

    Been a 10 mm man for years. Shot everything from steal to bowling pins to targets out of S&w 610’s a 10-06 a delta gold cup a Caspian race gun. Never had a problem with any of them. I have a 610 with over 25000 rounds put threw it and it still is my best shooter. Never owned a glock. Got kind of interested in this new mod. 40 though. Like to know what poundage recoil springs they offer.Had to make a slide racker and put on my gold cup because of the 24 lb spring . If you put a red dot scope on this type of beast your not cocking it with out one. Then again if your loading down for target shooting I had to change the spring to a lighter one to get it to not short cycle. Things to think about.

  • No August 27, 2015, 1:50 pm

    I’ll pass. Same weight as G20 means it has a thinner slide with less reinforcement and therefore less strength.

    Not acceptable for 10mm, especially when using the hotter ammo loaded to true 10mm pressures.

    • Rebel Wolf September 11, 2017, 12:17 am

      The listed weight on the website is wrong.I have this gun ( model 40 MOS 10mm ) & the manual states that it is 35+ ozs. unloaded with empty mag.It feels solid , no worries about it being weaker than model 20. It is heavier than model 20.I’m using Underwood in mine with no issues.

  • Bob Johnson August 26, 2015, 7:06 pm

    Glock – Dangerous gun. Would you carry your 1911 locked, loaded and cocked with the safety off? That is a striker fired pistol with no safety…

    • john August 27, 2015, 11:04 am

      Bob — TROLL !!!

    • Ricardo Montelban November 26, 2015, 11:27 am

      He makes a good point, Glock’s are not the ideal first gun and they’re definitely not for everybody. I like and own a few Glocks, but then again I’m exceptional at everything.

    • Jeepman007 April 12, 2016, 8:33 am

      It always makes me laugh, people and their “no safety” = “dangerous gun”.

      I have seen more people miss the safety shooting in competition than I can count and these are people who you see more than once at the range.
      To each his own, but get out of the mind set that because a gun has no safety does not make it unsafe. The operator and the connection between his brain and finger are the safeties.

      And carrying a 1911 in condition 0 is not unsafe either. Its all in your mind that the gun is unsafe. You can leave the gun on a table for a 100 years and it would never fire in Condition 0 without an outside force manipulating the grip safety and trigger.

      A Glock or other striker fired guns are not “unsafe” when carrying loaded or in condition 0. Its all in your brain.

      And to each his own, but your brain is the best weapon to stop stupid from happening.

    • Dewey September 12, 2016, 10:25 pm

      You clearly do not understand the mechanics of a Glock. It is NOT cocked with a loaded chamber. The first half of the trigger pull cocks the striker. YOU are the safety on any gun and clearly, your safety can not be relied upon.

    • Scott December 10, 2016, 3:40 am

      Yes lve carried glocks for years never had a problem,more than half the cops in USA have glocks .But if your not feeling it I installed a mechanical safty on my wifes glock 22

    • Jbourneidentity December 25, 2016, 4:39 pm

      You do know that unlike 1911s, the Glock mechanism is passive and doesn’t even cock until you pull the trigger, yes? Or, maybe you don’t know. After 30 years in the field, the only thing that causes an AD are idiot users with their bugger pullers on triggers when they shouldn’t be. Oh, and Google negligent discharges…you’ll find as many with 1911s as Glocks. You gonna blame the 1911 or just continue to be a non-thinking 1911 fanboy?

  • T. MacArthur August 24, 2015, 2:18 pm

    MI like it. Always been a big pistol guy. My regular CC gun was for years a 1946 Milspec model full sized 1911A1. Then years ago things changed and I couldn’t always wear something that’d conceal the shoulder holster, so I switched to the .40 cal Baby Clock. What I liked about that was that I could carry 2 spare mags from the full sized .40 cal, giving me plenty of ammo if it was ever needed.
    I’m going to try to get one of these 10mm Glocks before next year’s Elk season. Without even checking price, I’m pretty sure I can’t afford one before this year’s, which is coming up pretty soon. But given that there are some bears and cougars where I hunt, the Glock’s extra mag capacity will be an improvement over the 1911.

  • Capn Stefano August 24, 2015, 11:37 am

    OH, and for REAL 10MM ammo, check out Underwood.. it’s #u++kickin’

    • matt August 24, 2015, 12:18 pm

      +1 on Underwood. It’s what I carry in the woods.

  • Capn Stefano August 24, 2015, 11:35 am

    I pack an EAA Witness Elite Match 10MM daily, with 4 reload mags. I have a G20 but it’s not even close to the Witness in ergos or shootability. Not a Glock hater, have 4 of them, one in my wife’s purse. Just sayin’

  • Pitt2500 August 24, 2015, 11:04 am

    I have a Glock 20SF that I installed a Lone Wolf 6.61″ barrel on.
    Would have loved the longer sight radius but feel the extra barrel length helps with velocity/energy and recoil.
    Lone Wolf also has a 9″ barrel that should really step up those Corbon & Buffalo Bullet loads!!!
    Mine is very pleasant and accurate to shoot as well.
    Hunt in Texas and it IS a hog thumper!!!

  • al jordan August 24, 2015, 10:24 am

    is this gun more powerful than a 50 caliber pistol and what does it coast

    • G35JIM August 24, 2015, 12:47 pm

      Much less powerful and about half the price of a Desert Eagle.
      I also have a 10MM from EAA which is all metal and I love to shoot!

    • Mikelasnicov August 24, 2015, 3:14 pm

      The 10mm with a proper 10mm load is around similar ballistics to a .357 Magnum, maybe even a tiny bit higher. So it’s a very effective round for self defense or hunting. I wouldn’t want to take it grizzly hunting as my primary weapon, but I would use it for black bear or deer. It’s obviously not as powerful as a .50 AE – Action Express, but it is still very powerful and easier to control and you have higher capacity. But if you want full power ammo you have to do a little research because a lot of the commercially available 10mm is loaded on the weak side, closer to .40 S&W. In fact the .40 S&W is actually a shortened case, down loaded 10 mm. Even though you wouldn’t want to go grizzly hunting with it, it is still capable of killing a grizzly bear. But that could be pretty risky. I’ve never hunted grizzly but the people who do seem to all say that for a pistol round they would not want to use anything smaller than .44 Magnum. I’ll take their word for it because I’ve seen how big a grizzly is so it makes sense to me.

      • Leadfoot August 24, 2015, 5:14 pm

        You said what I’ve been saying for years, but in a different way: the 10MM is actually a .40 S&W Magnum! I’ve always been surprised no one says it that way, but maybe it’s cuz the 10MM came first, whereas the .38 Special came before the .357 was developed.

        For years I had a Glock 20, but it was hard to control with those 15-rd magazines. I just bought a Glock 29SF and got the Pearce grip extensions. Haven’t had a chance to shoot it yet, though. Woulda bought a Gen4 (both were the same price), but many comments I read online said the grip texturing was “too aggressive” and actually made the hands hurt and sore for a few days (although I’m sure those guys shot more rounds in one session that I do).

        The Gen4 Model 40 is also available as a “gray gun”. My FFL guy showed me one, but I must admit the “gray guns” don’t grab me – what’s the point, other than a different color?

        I also have an EAA 10MM, which also holds 15 rds as someone mentioned, and it’s great fun to shoot. Also have a Colt Delta Elite in 10MM (made sure to find one that had been refinished so I wouldn’t have to worry about collector value and could just have fun with it as a shooter!).

        One thing I did with my Glock 20 was put in a Glock target trigger (or enhanced trigger, or whatever Glock called it). Almost wished I hadn’t – that trigger pull was sooo light. Almost.

        • Bob schwent June 17, 2016, 9:55 pm

          The G29 gen4 is pretty snappy with full power loads, but who cares when the stuff hits the fan? At the range it can get old in a hurry.

      • Scott December 10, 2016, 3:47 am

        No issues with anything on 4 legs in North America

  • Mark Reynolds August 24, 2015, 10:22 am

    WHAT? 1250 FPS with a 155 XTP hollow point from Hornady? That’s .40 cal velocities! Talk about UNDER loaded!
    A totally legit load that I’ve used working up from a listed load at Ammo Guide is a 155 Hornady with Accurate AA-7 at 15.1 grains Max and it produced 1,561 FPS and 839 pounds of muzzle energy out of a 5.0 barrel. 1250? SERIOUSLY? Why carry a big pistol like this when you can get that kind of velocity out of a Glock 35!

  • Matt August 24, 2015, 9:57 am

    Love the article! Before Glock made the 40, I purchased a long slide and barrel for my G20.
    Purchased a Kydex holster from a very talented local maker, Center Mass Concealment Holsters in Crocker, Missouri. Has adjustable belt loops and can be adjusted to carry in a moderately high cross draw.
    I find my 155 XTP handloads scoot closer to 1475fps. Makes a mess of a watermelon.

  • JAY August 24, 2015, 9:45 am

    Glock has a thing for the 10mm, they’re practically the only one out there supporting it, with only a few exceptions. The 10mm stands in an odd spot, for self defense does it really do anything better than the .40 or .45 and for power, it falls well behind the revolvers (.41 Mag on up) which BTW are much better options for Grizzlies, the 10mm isn’t up to that task! From a power perspective, the 10mm could be described as a .40 caliber .357 Mag, their ballistics are nearly identical. Cool gun overall, sure to please the 10mm kool-aid drinkers.

    • Huntnorthwest May 10, 2016, 10:53 am

      I have read comments all over the place and it just drives me up the wall, how these arm chair spectators without any experience just throw out their opinions. There is not a pistol out there that is ideal to stop a grizzly. Fortunately I have never been charged by a grizzly, but have been close to a couple and they are a massive, huge, pile of muscle and bone. However I did have a conversation with a guide who specializes in bow hunts for browns. He on the other hand has been charged and lived to tell about it. With my hunting background and his first hand knowledge we agree that a 10mm, 44mag., 500S&W whatever will not stop a determined Grizzly. They all under an ambush situation would most likely put down any big bear, but having to face a charge is total other thing, and if you shoot a protected bear he better be charging you or the state will make you wish the bear had finished you. The best defense is, if you suspect a big brown is in the area then STAY OUT!!! If you are caught by surprise there are two weapons that most guides in Alaska agree on, they are the Remington 870 with extended magazine and the Marlin Guide gun in 45-70 with Garrett hard cast ammo, and don’t shoot the body go for joints, you must immobilize the bear, take out the props. At 35 mph they can cover a lot of ground fast. Thank you letting Vent………G

    • Bob schwent June 17, 2016, 9:58 pm

      Velocities are the same, but you’re talking a .357 125gr. Vs a .401 180gr. Bigger, heavier bullet at the same velocity

  • Paul Valone August 24, 2015, 9:39 am

    This seems like a great gun and I want one, but have a question: In my current “woods gun” (a Kimber Eclipse Custom II in 10mm), I carry Buffalo Bore’s 220 gr. hard cast load, and would continue to do so in the Glock. Do I take it that although lead bullets are not recommended in Glock’s polygonal rifling, hard cast bullets are safe?

    • Mark S August 24, 2015, 11:28 am

      Yes! Glock recommends against using lead bullets in their polygonal barrels.
      An article on the Buffalo Bore website insists that it is a “myth” that hard cast bullets pose a risk.
      Having seen THREE catastrophic Glock KABOOMS at the range, I’d like to see independent testing on this point.

      • matt August 24, 2015, 12:13 pm

        You have not personally seen 3 catastrophic faliures. Give me break. I have been shooting Glocks for over 20 years. I was on a shooting team that shot Glocks exclusively for 12 years. Between IDPA, 3 gun, Front Site and tons of other training I have seen 100’s of thousands of rounds fly through 1000’s of Glocks with zero catastrophic faliures. There is enough bs out there from anti-gun idiots. Let’s not spout more in arenas like this.

        • Tony December 9, 2016, 4:50 pm

          If your talking about lead rounds even Glock warns you that you may have failure do to the lead foiling The barrel. because there are no traditional groves for the lead to escape into if your isn’t fmj or jacketed rounds you shouldn’t have any trouble

  • MattB August 24, 2015, 9:18 am

    If you decide to get the 40 and a Trijicon RMR, be aware you will need an extra mounting kit from Trijicon to make it work. The screws provided are too long. I was sorely disappointed when my RMR arrived and had to wait another week.

    Trijicon AC32064: RMR Mounting Kit for Glock MOS Models

  • Snidely Whiplash August 24, 2015, 7:28 am

    Careful you don’t lose a digit or two when you try out the “hard” stuff in a gun that’s not designed to handle them. Anyone who manufactures full power 10mm loads warns against the use of them in Glock’s and most 1911’s do to the chance of catastrophic failure KABOOM. Smith & Wesson and Sig are two firearms designed to handle full power 10mm loads. Weak commercial loads are loaded that way for a reason and the reason being for use in inferior firearms. Do your homework.

    • RickL August 24, 2015, 8:46 am

      Snidely I think you are absolutely incorrect. Never have I read that Glock warns people not to shoot high powered loads. Sort of defeats the purpose of buying the gun. No manufacturer says to shoot high powered continuously but they certainly won’t self destruct. If that were the case I would get a .40 and forget it.

    • Larry Koehn August 24, 2015, 9:13 am

      I think that your name is a give away. Those under powered 10mm loads are for girly boys and FBI agents who are “sensitive” to recoil and muzzle blast. I have owned and shot 10’s since they came out. The first was a Javelina 10mm with a 6 in. slide which was not known as particularly high quality firearm. I hand load and fed it hot loads all of it’s life without a problem. I bought a Springfield Omega 10mm and it also has functioned flawlessly on a diet of hot hunting loads. I think that you will find that no one in our litigious times will produce guns that blow up on commercially available ammunition.

    • Chris C August 24, 2015, 10:30 am

      It is absolutely incorrect that any ammunition company warn against the use of full power loads in the 10mm Glocks. Buffalo Bore and Underwood make the hottest loads I know of and they issue no such warnings. The warning for 1911’s is also only for ramp less barrels such as the Colt Delta Elite, not ramped 1911’s like the Rock Islands.

      • Perk August 24, 2015, 1:39 pm

        I have a RIA FS 10MM tactical as my CCW & besides it being my FAVORITE gun I ever owned & sleeps with me, I load it very hot MAXX loads & handles them like a champ!!! Kicks like a mule with a 12-14″ fireball but we’ll worth carrying it around!!!

        • Glock_10 August 26, 2015, 10:04 am

          I love the fireballs, my 20c produces a great Fireball show. When people see it for the first time you can hear them gasp…….

      • Perk August 24, 2015, 1:39 pm

        I have a RIA FS 10MM tactical as my CCW & besides it being my FAVORITE gun I ever owned & sleeps with me, I load it very hot MAXX loads & handles them like a champ!!! Kicks like a mule with a 12-14″ fireball but we’ll worth carrying it around!!!

      • Mike August 24, 2015, 8:37 pm

        Are you saying that it is not safe to shoot Buffalo Bore 1500FPS 10MM ammo in a Colt Delta Elite?

  • Robert Crenshaw August 24, 2015, 6:36 am

    It is tough to read a story when the initial photo has a comment under it that shows the author does not know the difference between the words then and than. I realize there is little funding for proof readers, or even less time to check what you have written – but this speaks too loudly of the intelligence level of the “voices” that help us keep our 2nd amendment rights.

    • Glock_10 August 26, 2015, 9:58 am

      I have a dislike for English teachers ever since the 4th grade. They can be shattered by a mistroke on a keyboard. If you want to win a gunfight with an English teacher just yell out “aint got no” their eyes will glaze over and the brain freezes so you can take your time picking them off. There will be no English teachers in Heaven…… least not the part I will be livin’ in……..

      • John August 27, 2015, 8:50 am

        Glock 10, Save me a spot in that part of heaven as well.

  • Dennis August 24, 2015, 6:19 am

    When is the G40 going to be available to the public?

    Thx, Dennis

  • Steve K August 24, 2015, 6:01 am

    Bin trying to FIND all year! Guess they’re too busy making 43’s.

  • charlie44 August 24, 2015, 5:51 am

    “I loaded the gun with the American Eagle 180 grain FMJ and fired 6 rounds at 7 yards from a two-handed stance and was rewarded with a 1.22” grouping.” Does anybody believe this??? two-handed stance??? 6 rounds at 7 yards??? a 1.22” grouping??? Come on. Maybe on a table supported by bags. Author, you are not that good!!!

    • George August 24, 2015, 10:12 am

      Maybe you are not that good and you are projecting These gunsriters fire far more guns than you or I do and far more often. I believe him, you can just yell in your basement for mom to bring you more Cheetos and Mountain Dew

      • charlie44 August 27, 2015, 6:17 pm

        not projecting, but also i’m probably not as good as i think too. i’ve tried but was never able to put 6 9mm’s @ 7 yards consistently in a target the size of a half dollar. maybe 3 or 4, but not 6 in slow-rapid fire. and cut the crap with the snotty mother, soda and Cheetos reference, i am trying to be serious. i’d like to see you put 6 in a pattern covered by a half dollar, then you can show me.

    • matt August 24, 2015, 11:49 am

      Charlie, you can’t put round over round at 7 yards? With that long sight radius and barrel? I can do that with my G20 and 17. Come on guy. You need to practice more.

      • charlie44 August 27, 2015, 6:28 pm

        amen, no i can’t, more practice needed for sure, but next time you go to the range with your g20 with stock “American Eagle 180 grain FMJ’ rounds, and can cover your set of 6 shots with a half dollar coin ask your range master to sign it, take a photo and post it. you said “I can do that with my G20 and G17”, so show me. maybe some pros may be able but i don’t think so.

    • Jasper August 25, 2015, 12:30 am

      Sorry, there is absolutely no reason to not be able to shoot 1.22 group at only 7 yards!
      When I was shooting IPSC and I put a lot of ammo down range. I would test all my ammo at 25 yards with a two handed grip, unsupported firing. With my Super Blackhawk .44 magnum hunting loads, 265 grain bullet over 21 grains of H110, 6 rounds would touch on the target regularly. With Ruger SP101 fixed sight 4 inch barrel, 2.25-2.5 inch group for 6 rounds double action, firing 158 grain bullets I cast myself at just over 500 foot pounds of energy, I had my reasons for that number.
      The same results with .45 ACP in an old Colt 1911 and poor sights at best, my eyesight was better then. 🙂
      I considered 2.5 inch groups at 25 yards my acceptable upper limit. Most of what I was shooting was well under or within 2.25 inches for 6 rounds. I do not know what I could have done with a rest and bench, as I did not shoot any of them in the field or competition with a rest or bench. So I would always test in the same manner as I would need to shoot.
      I did not shoot for groups at 7 yards at that time, I had my system and targets would be as close as point blank to 75 yards for one match. 25 was a good compromise range and showed me what I needed to know.
      These days, I no longer compete, don’t shoot as much and when I am teaching someone to shoot fast, we do not completely care about how small the group is at 7 yards. Now what we are looking for is time and group size. For a newer student, we are looking at 4-5 inch groups in under 2 seconds with a 2 in barrel at 7 yards. More than good enough with a .357 LCR. That being said, the last time I did slow fire at 7 yards with a 3 inch model 29 and full house ammo. They all touched each other on the target for 6 rounds, double action.
      My suggestion, get a better firearm, better ammo, or practice more. One of them is sorely lacking if you are in disbelief about the group size.
      Good luck going forward. 🙂

      • charlie44 August 27, 2015, 7:17 pm

        Jasper, you are obviously quite a good shooter, but i’m just using a lowly stock g35 with a lone wolf conversion barrel with 9MM PMC Bronze 115 gr FMJ 1150 fps rounds with g17 factory magazines. i know it’s not the high power stuff you all probably use but it’s all fun for me trying to get a 6 shot pattern that i can cover with a half dollar coin in slow to medium fire. may i ask if you have actually ever been able to do that 1.22″ group? i’d like to see that target, maybe so. when was the last time you accomplished this 1.22″ group fete? And you said “They all touched (with your g29/3.8″ barrel) each other on the target for 6 rounds, double action.” just shaking my head, i’m surprised you didn’t have a few of the rounds actually go through the previous shot target holes, i’ve heard some speak about doing this. now remember this review is for a g40 which is the powerful 10mm. any way i appreciate your response.

    • Steve Warren December 27, 2016, 10:03 am

      Ahhh…? Seven yards? Dude, that’s like 21 feet. A quality gun in the hands of a trained shooter better be able to do that… or better!

      • jacrump May 3, 2019, 7:44 am

        7 yards is almost exactly 21 feet. Nearly. Give or take a few inches of course. And given local winds, humidity,etc, at three feet per yard, I’d say very close to 21 feet.

  • Mick Dodge August 24, 2015, 5:23 am

    A big grizz will kill you while you are pumping those 10mm rounds into him.
    Even if he dies so will you considering if he is close enough for pistol range and charging you have two seconds or less to act.
    A revolver in 30 06 might help if you can stand the recoil.
    The largest brown bear on record in Alaska had the remains of three hunters in his gut. It also had four .38 rounds in his body. It took seven rounds from a 7mm magnum to kill him.
    He weighed 1800 pounds.
    That’s one big bad mamma jamma.

    • Mick Dodge August 24, 2015, 9:08 am

      All right so I embellishes it a bit
      It was still 1600 pounds and only the remains of two hikers were in it’s belly but the rest is pretty much what was related in the news outlets.

    • Alan August 24, 2015, 9:16 am

      I too could give you some stories about near instant kills concerning Grizz, including the well known one about the fella who shot one through the eye with a .22LR.
      I wouldn’t choose a 10mm, but it’s gotta be better than feeding it your appendages.
      W.M. “Karamojo” Bell killed many an Elephant with a 7mm Mauser, so caliber aside, it’s about placement and penetration in a quick kill vital zone.
      Seven rounds from a 7mm? Someone needs to learn how to shoot.

      • Scott August 24, 2015, 11:09 am

        There was a story on TV about a guy on one of those Alaska shows that used his Glock 20 and took down a pestering moose that was threatening his family.. Think he said he pumped in 6 or 7 shots.. He shot till the thing went down. The 1st round could have been fatal but it took a while to disable the moose! (Yes the moose was full grown.)

      • Mark Tercsak August 24, 2015, 1:52 pm

        If I remember correctly Bell took more Elephant than almost any person that we know of, and your correct he took most of his elephants with the 7mm Mauser, But Bell really knew his rifle and it’s cartridge and the projectiles and what worked and what did not and he also knew the game he was hunting really well and he knew where to hit them and he was a good shot, and as he became more pro- he developed nerves of steel, Most folks who encounter the great bears are going to encounter them in a public zoo, and those that do go out into the wild, will have surprise encounters that are up close and are of a complete surprise to them, Never go under gunned, but also take something you can handle and just because your not hunting, study the animals anyways in case you have to kill one and get to know their habits and what to do and not due so as to avoid such encounters. I would urge a rifle and a handgun as last resort, a revolver and in at least 44 magnum, and but good high quality ammunition such as Garrett or Buffalo Bore or Corbon as examples and practice with that ammunition to, as per rifles skip the 30-06 , get a nice Marlin lever action in 45-70 Government or a Winchester model 1886 in 45-70 Government, also with good hunting loads, Garrett, Buffalo Bore and Corbon has them as does others.

      • John DeGroff August 24, 2015, 5:20 pm

        Alan, it was an actual game warden who killed that bear. The bear wasn’t standing there feeding on some berries and he had a good shot. By the way I have pictures of that bear and the warden. The paw is as wide as his chest. The bear’s head is about two and a half feet across.

    • Scott December 10, 2016, 4:00 am

      Thats a super bear ,nowhere near average. Thats what my marlin guidgun is for in 45-70

  • jim jones August 24, 2015, 5:14 am

    The IDPA “Box” is 8 3/4 long you say it will fit. The spec sheet above has the overall at 9.49 . This will not fit.

  • Chad August 24, 2015, 4:07 am

    The Glock 40 is 9.49 inches long and the IDPA Box is 8 & 3/4 inches. It will not be IDPA legal just like the Glock 17L.

  • Unclogged August 23, 2015, 1:21 pm

    Hey, Draino, it wasn’t Italian – it was Hawaiian – and the phrase was “E Aho Laula”. That was a cool Pontiac commercial! And to keep this on topic, I have a G40 on order to replace my G20!

    • Dennis Brennan August 24, 2015, 7:29 am

      I’ve owned a Glock 20 for about 10 years and I’m curious to find out if any improvements were made. I’m pleased with the generation of Glock 10MM that I own. A comparison between the earlier generation and the new generation would have been helpful.

  • DRAINO August 23, 2015, 9:23 am

    I can’t remember the Italian phrase in a commercial that Pontiac used for “wider is better” …..But I LIKE this gun! Definitely looking into one. I Love the 40 S&W….and I think the 10mm will be even more awesome. And I can use the same bullets…for the most part. I just hope it fits my hands….many glocks don’t.

    • Ty August 24, 2015, 11:30 am

      I have the G20, love it! If you want to run .40 S&W through a 10mm you only need to get a .40 barrel. I picked up a lone wolf one for $90

      • Brian September 22, 2015, 8:12 pm

        Anybody know if Lone Wolf will be making conversion kits for the G40? I’d like to run cheaper .40cal for practice on the cheap… then the big 10mm loads for hunting.

  • Woody - GunfightersINC August 21, 2015, 5:51 pm

    Thanks for the shout-out!

    Anybody who has Glock 40 MOS and wants a Kenai Chest Holster – our Glock 20/21/41 holster fits it IF you’re not running a MRDS. We are working on getting our hands on a Glock 40 with a RDS to adjust our molds to fit that model specifically. You can find that holster on Amazon or our Website.


    Sale/Marketing Manager

    • Michael August 24, 2015, 6:37 pm

      I plan to purchase the Glock 40, install suppressor height sights, extended slide stop and mag release. I’ll have the trigger guard relieved for a higher hand position and add a Trijicon 06 RMR along with a Surefire light with strobe and possibly laser.
      So, please consider including room for a light for your holsters…As long as you’re going big !
      This pistol with Underwood Ammo is a hammer.

    • Cary Howard August 24, 2015, 7:40 pm

      I love the Kenai holster, you guys do great work! I sure hope you get one made for the G40 MOS soon.

    • Eric August 25, 2015, 10:49 pm

      Is your Kenai holster available in a variant to fit a G20/21 with an attached Streamlight TLR-1 weaponlight?

    • Kent December 27, 2015, 11:59 am

      I also would like a holster with suppressor sights, RMR, and a TRL-1.

      Semper Fidelis

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