SIG Sauer P320-XTEN Comp Pistol: Firing Line Report

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SIG Sauer introduced the P320-XTen 10mm just over a year ago, and now the company has followed it with the new P320-XTen Comp. “Comp” does not stand for compact, although as 10mms go, it’s fairly, well, compact. But it really stands for compensator. The P320-XTen Comp features an expansion chamber integrated into the slide. This single-port compensator allows gas to expand and also vents it upward to significantly reduce muzzle flip and perceived recoil.

The carbon steel bull barrel is 3.8 inches long, housed inside a Nitron-finished stainless steel slide that’s 4.25 inches long, the additional length due to the compensator.
Iron sights are the excellent X-Ray3 day/night sights, with unobtrusive tritium vials in the serrated U-notch rear and a tritium vial surrounded by a bright green circle in the front blade. They’re standard height and won’t co-witness, but both are set in dovetails and can be swapped if you want co-witnessed irons. The slide’s optics cut is on the Leupold DeltaPoint Pro footprint.

Controls include an ambidextrous slide stop that, while small, protrudes just enough for easy activation if you want to use it as a slide release but won’t snag on the draw.

The magazine release is oversize and extended, and it can be reversed for lefties. Two 15-round magazines with numbered witness holes come with the gun.

Modularity

The X Series trigger is flat, producing a 90-degree break. Trigger pull on my sample was just a hair over three pounds on average.

The P320 is a modular pistol comprised of slide, barrel, fire-control unit and grip module. SIG offers a dizzying array of different sizes, shapes and compositions for the grip module. In this case it’s the polymer XCarry—the first XCarry module for the 10mm/.45—with a three-slot Picatinny accessory rail out front.

Other than my P365, I’ve often found SIGs to be too chunky for my medium-size hands and relatively short fingers. The XCarry is a slimmer, trimmer module, and it fits me well. It’s got a decent-size undercut behind the trigger guard, and that, along with the beavertail at the back, contributes to control.

Note that with the XTen Comp, the only grip modules and other components that will fit this gun are those specifically designed for the 10mm or .45 ACP—not 9mm Luger, .357 SIG and .40 S&W.

Shootability

Weight is 32.3 ounces, and at 7.6 inches long, it’s almost an inch shorter than the P320-XTen. The XTen Comp is shorter and lighter than 1911s in this caliber, but the Smith & Wesson four-inch M&P in 10mm—probably its nearest competitor—is about five ounces lighter and half an inch shorter.

While I’ve not fired that particular S&W, I’ve shot a lot of 10mm pistols, and none of them comes anywhere close to the shootability of this new SIG. And to me, that’s its biggest selling point.

Normally our accuracy protocol is to test barrels under four inches at 15 yards, but since the XTen Comp’s slide length is 4.25 inches I thought it was appropriate to bench-test the gun at 25 yards.

I mounted a Leupold DeltaPoint Pro on the slide, and the results speak for themselves. While the 180-grainers were a little snappy, even from the bench they were relatively easy to shoot. The Federal Punch was the softest by far—and also the most accurate, although I did experience one failure to chamber with this load. The P320-XTen Comp has one impressive ejector, with empties chucked as far as 20 feet from the bench.

Training

For drills, I went with the iron sights and CCI Blazer Brass 180s. Holsters intended to fit the P320-XTen do not fit the XTen Comp because the latter has a slightly wider slide. SIG told me the company plans to offer a shoulder holster for the XTen Comp soon, but I found that N8 Tactical’s MultiFlex large-format holster easily adjusted to handle the SIG.

I mostly ran the El Presidente drill, and I came away super impressed with how the XTen Comp shoots. I won’t say it recoils like a 9mm, but for a small 10mm it’s fantastic. I think anyone with a decent amount of experience will find it to be fast on follow-ups and fast on transitions while not beating the hell out of you during long sessions.

The grip texture is Goldilocks-right, at least for my taste—keeping the gun stable in your hands but not chewing them up. The slight flare at the base of the grip makes for sure, fast reloads.

SIG is aiming this gun directly at outdoor recreationists who spend time in brown bear country. I’ve actually been thinking of getting a 10mm for a while, and for me the XTen Comp checks all the boxes as a backcountry or even concealed-carry gun: acceptable size and weight, accurate and incredibly shootable for its power level. I’m buying this one.

SIG Sauer P320-XTEN Comp

• Type: striker-fired semiauto
• Caliber: 10mm Auto
• Capacity: 15+1
• Barrel: 3.8 in.
• OAL/Height/Width: 7.6/5.6/1.4 in.
• Weight: 32.3 oz.
• Construction: Nitron-finished stainless steel slide, polymer XCarry grip module
• Trigger: X Series flat; 3 lb. 2 oz. pull (measured)
• Sights: X-Ray3 day/night; slide cut for Leupold DeltaPoint Pro
• Safety: internal
• Price: $1,050 (street)
• Manufacturer: SIG Sauer, SIGsauer.com

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