SilencerCo’s Osprey Suppressor Is One Cool Bird

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SilencerCo 45 Osprey in action.

SilencerCo 45 Osprey in action.

At risk of being exposed as a “B” grade cable TV junkie, I have to admit I enjoy seeing my favorite pistol suppressor on AMC’s The Walking Dead. If you’re a watcher of that particular serial carnage, you might have noticed that lead character Rick Grimes has one interesting looking silencer on his gun. That would be a SilencerCo Osprey. It’s easy to spot because it’s shaped a little bit like a smashed Twinkie. It’s not round like all those nifty silencers 007 used back when Bond movies were awesome. One could make the case that it’s reminiscent of saggy underarms you see on old folks – the bulk of the suppressor is hanging down below the bone, so to speak. Just to be clear though, the Osprey is a lot sexier!

A caliber smorgasboard: A 45 Osprey on a Glock 31 (.357 Sig) using a Lone Wolf .40 S&W threaded barrel.

A caliber smorgasbord: A 45 Osprey on a Glock 31 (.357 Sig) using a Lone Wolf .40 S&W threaded barrel.

There’s a  good reason for the unusual shape. To suppress a gunshot, you have to control and slow down more gas than Piers Morgan ejects in an entire hour, and you have to do it in pico-seconds. Or maybe micro or milliseconds. No matter, you have to control the hot gasses quickly, and to do that, you need a certain amount of volume in the suppressor itself. The natural solution to creating volume is to make the tube bigger around, but if you do that, then the large tube blocks your front sights. Come to think of it, and the SilencerCo folks did, why not stray from that whole round tube concept and create more volume under the barrel and less on top of the barrel, thereby increasing visibility for the shooter? After all, people who know, know it’s good to see what you’re shooting at.

So that’s the reason that the SilencerCo Osprey is shaped like a squashed Twinkie. By the way, the Osprey has 30% more internal volume than a cylindrical suppressor of identical length.

When you screw the Osprey on to the barrel, it may end up like this. No worries, that's what the clutch lever is for.

When you screw the Osprey on to the barrel, it may end up like this. No worries, that’s what the clutch lever is for.

There is a catch, however. When you screw that suppressor onto the barrel, how do you know that when it’s tight, it will line up properly so that the chubby part is on the bottom? The technical term for that particular engineering problem is “indexing.” Indexing is just a fancy word for “lining everything up, so it doesn’t look weird.” Here’s how SilencerCo solved the indexing problem.

The SilencerCo Osprey body has a lever that locks the body to the internal piston. When that lever is open, the body freely rotates around the piston, which remains in fixed position. When the lever is closed, the body is locked to the same orientation as the piston. It’s kind of like a clutch really. When you stomp on the clutch in your AMC Gremlin, the engine is essentially disengaged from those solid plastic wheels. See? It’s the same basic idea.

It nets out to this. To install the Osprey on a standard threaded barrel, just screw it on tight until it’s seated. At this point, the suppressor body may be right side up, upside down, sideways, or somewhere in between. No worries, just open that clutch lever, rotate the body til the fat part is on the bottom, and re-engage the “clutch” lever. It’s much simpler to do than describe.

The SilencerCo Osprey, like the SilencerCo / SWR Octane, uses internal pistons that you can swap in and out for different barrel sizes and threading patterns. The piston also serves as a “booster” which is a spring operated assist to help your gun operate properly with the extra weight on the suppressor on the end of the barrel. Semi-automatic pistol operation relies on a careful balance of pressure and spring action and the additional weight of a silencer on the moving barrel can interfere with proper operation. The booster system alleviates that problem.

Release the lever, line up the Osprey, then clamp it back down.

Release the lever, line up the Osprey, and then clamp it back down.

When you fire the gun, gas pushes the suppressor body forward against booster spring pressure. As the pressure falls, the spring moves the suppressor backward, thereby assisting the natural recoil action of the pistol, allowing the barrel and slide to move backward properly.

If you want to mount the Osprey on a fixed barrel gun like a pistol caliber carbine or subsonic 300 Blackout rifle, then you insert an optional spacer which prevents the booster from moving backward and forward. If your barrel moves, use the moving booster assembly. If it doesn’t, use the spacer to keep the silencer rigid.

I ordered the 45 Osprey, although they are available in 9mm and .40 S&W also. The reason I chose the 45 is that I can always swap pistons and use the same can on smaller caliber pistols, even a .22LR if I want. You might lose a decibel in sound suppression using a larger suppressor on a smaller caliber, but the tone is different too, so to me, it’s an undetectable difference. The only other drawback to ordering the larger version is just that – it’s a bit larger than the 9mm version although the 40 and 45 are identical in size.

When shooting from a fixed-barrel gun, just replace the booster spring with this optional spacer.

When shooting from a fixed-barrel gun, just replace the booster spring with this optional spacer.

So far, I’ve tried the SilencerCo Osprey on a Beretta 92FS 9mm, a Glock 31 with a Lone Wolf .40 S&W threaded barrel and a CMMG 300 Blackout pistol using subsonic only ammunition. All turned out to be excellent fits. If you’re going to use the Osprey on a 300 Blackout, be sure to stick to subsonic ammunition only as it’s not rated for the higher pressures of supersonic 300 AAC Blackout ammo.

Oh, and did I mention it looks insanely cool?

Factory Specs – 45 Osprey

Calibers: 9mm – .45 ACP, .300 BLK Subsonic
Weight: 11.1 oz
Dimensions: 1.3”W × 1.75”H
Length: 8.0625”
Sound Level (Dry/Wet): 132.5 dB/123 dB (tested with an HK USP Tactical with Remington UMC 230 Grain Ammunition)
Finish: Hard Coat Anodizing Black Oxide
Materials: Core/Caps: 7075 T6 Aluminum Tube: 6061 T6 Aluminum
Piston/Mounting System: 17-4 Stainless Steel, Heat Treated,
MSRP: $849.95 (with piston)

About the author: Tom McHale Literary assault dude writing guns & shooting books and articles. Personal accountability rocks!

{ 5 comments… add one }
  • Click Bang November 11, 2016, 10:22 am

    Its too bad that Osprey does not stand behind any of their products and simply ignores customer problems with sub standard products… The cheapest items from China are of better quality than the Osprey red dot reflex sight that I purchased, and Osprey has ignored several attempts to get them to honor their warranty…
    I will never recommend or purchase an Osprey product… They should not even be in business….

    • Chris September 18, 2018, 6:03 pm

      Um, Osprey isn’t the company….

  • WILL June 2, 2016, 1:41 pm

    Do you have one for the G43 9X19

  • fuzzyduck January 27, 2016, 9:57 am

    I bought one of these for a .45 ,3 years ago. This on my 1911 stainless Taurus and a Storm lake match grade barrel has to rate as one of my favorite range toys. I bought one because I wouldn’t have to change my sights to higher ones.My factory sights are perfect and run across top of the can.The smooth sides of the can compliment the 1911 slab side look. Everyone that sees and shoots it love it.I ordered a barrel for my Glock 21 to use the can on it also. I’m not as pleased with it however,as it is louder and is not as accurate . I shoot the 1911/ Osprey combo usually without hearing protection as it is much quieter than a .22. I know that you think I may be nuts ,but I always wear hearing protection otherwise even mowing or cutting wood. We reload and as always we test fire any new load before installing the can .(They cost too much to have a baffle strike). This is an outstanding product, well designed and built. I would recommend anyone to consider this suppressor when looking for one.

  • Narciso Bortolami February 22, 2015, 12:23 pm

    Hello everybody, do you send a silencer to europe too.
    if yes please contact.
    Regards Mr. Bortolami

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