SIG Debuts Tungsten-Framed P320 XFive, Pro Slide Assemblies

SIG Sauer is updating their polymer-framed, striker-fired P320 series with a new XFIVE Legion model for competition and improved Professional slide assemblies for existing P320 owners.

What makes the P320 XFIVE completely, totally different from all other polymer-framed, striker-fired handguns is its tungsten-infused grip module. The tungsten brings the pistol’s dry weight over 43 ounces which is on-par with many steel-framed handguns. Additionally, because the grip is polymer-based, it still has the flex and give of a standard polymer pistol.

SIG says the combination reduces muzzle rise by 50 percent over the all-polymer models. They’ve also added an improved, skeletonized trigger system with a 30 percent lighter pull weight. The P320 series is already well-regarded for its trigger feel, but it is still a duty trigger with a heavier pull than most competition pistols. Another competition-oriented feature is 14-pound recoil assembly that can be replaced with an included 12-pound spring for use with light target ammo.

The full-size pistol is chambered for 9mm Luger and has a 5-inch barrel and lightened slide and comes standard with three 17-round magazines. Because it is a competition handgun it comes with a Dawson Precision fiber-optic front sight and black target rear sights. The rear sight assembly can be removed and replaced with a SIG Romeo mini red-dot sight.

Besides the weight, the grip has a couple of features that make it stand out from the full-size P320. It has an oversized, extended beavertail and a more contoured grip with an undercut trigger guard. It also has an oversized, flared magwell paired with magazines with enlarged magazine base pads by the Henning Group.

The XFIVE’s tungsten-infused polymer makes it unlike any other polymer-framed pistol on the market. (Photo: SIG)

Like other Legion pistols it has a dark grey PVD finish and otherwise sports the same features as other P320 pistols including reversible magazine safety, ambidextrous slide levers, and forward and rear slide serrations.

If all that’s not enough, SIG is offering even more exotic Pro series slide upgrades that have even more lightening cuts, X-Ray high visibility day and night sights, and – of course – a cutout for mini red dot sights.

These Pro slides run $399 and have a bead-blasted stainless finish with black highlights for a two-tone look. They don’t include the barrel and recoil assembly but they are available right now in full size, compact and sub-compact. They may be a little on the expensive side but hopefully SIG sales and other resellers will help take the edge off the MSRP.

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About the author: Max Slowik is a writer with over a dozen years of experience and is a lifelong shooter. He has unwavering support for the Second Amendment and the human right to self-defense. His ambition is to follow Thomas Paine, as a journalist by profession and a propagandist by inclination.

{ 4 comments… add one }
  • Timothy John Jenkin August 19, 2019, 9:14 pm

    To bad they do not make them into a magnum? They would be more flexible for the shooter. The lighter weight of the weapon. Amen!

  • Patrick Norton July 5, 2019, 11:34 am

    Tungston may be hard but it is also brittle would not want it as a part of a vital function on my firearm.

    • George from Alaska July 5, 2019, 3:21 pm

      Indeed tungsten is more brittle than firearms grade steel or aluminum but it did hold up well as shot in the no-lead loads. The tungsten is infused in the plastic and I did not get the feeling that it represented the majority of the grip frame, it was just used to add weight and a touch of rigidity. Personally I wouldn’t mind if they went to an all aluminum lower like they do on their 220, 226 and other metal framed Sigs. I’m not a fan of the lightness of the 320 anyway.

  • michael bishop July 5, 2019, 12:53 am

    love my sig 1911, she is getting a new barrel as we speak,trigger polish, she is getting plumb

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