Sig Sauer P320 XTEN Carry Comp 10mm 3.8″ MS Black

About this product

What is the Sig Sauer P320 XTEN Carry Comp 10mm? It's a short-frame, optics-ready pistol built around a compensated 3.8-inch bull barrel and chambered in 10mm Auto, designed to deliver full-power cartridge performance in a concealable carry package. This variant includes a manual safety fire control unit, a feature that appeals to a specific segment of the market concerned with administrative handling and holstering protocols. Its core engineering trade-off is reducing muzzle rise through porting at the expense of some decibel increase and potential reliability shifts with lighter defensive loads.

What is the Sig Sauer P320 XTEN Carry Comp used for?

This pistol is for backcountry carry where terminal performance on medium game or defense against large predators is the priority, compressed into a daily-carry size. The 10mm cartridge's 600-700 ft-lb energy potential from a pistol-sized platform demands effective recoil management, which the slide-integrated compensator addresses directly. It's not a flat-range plinker; it's a serious tool for managing the physics of a high-pressure round in a package that hides under a jacket.

How does the Sig Sauer P320 XTEN Carry Comp compare to the Stevens 334 Rifle in .308 Win?

The P320 XTEN is superior for rapid deployment and concealment, while the bolt-action Stevens 334 Rifle in .308 Win dominates in raw energy and effective range. The comparison highlights application: the 10mm pistol delivers about 700 ft-lbs at the muzzle, while the .308 rifle easily exceeds 2,500 ft-lbs, with a practical engagement distance extending past 300 yards versus the pistol's 50-yard effective limit. You choose the XTEN for a fight you need to start quickly at close quarters; you choose the Stevens 334 for a shot you have time to make at distance.

What does it weigh and what are the dimensions?

Loaded with a 10-round magazine, the P320 XTEN Carry Comp weighs 32.3 ounces (915 grams) and measures 7.6 inches in overall length. Its 3.8-inch bull barrel and 5.5-inch slide height create a dense, balanced feel that mitigates the sharp snap typical of compact 10mm pistols. For context, it’s approximately 0.8 inches shorter in overall length and 4 ounces heavier than a comparable Glock 29, trading some concealability for mass that soaks up recoil.

Who is this NOT for?

This is not for a new shooter or someone seeking a low-cost, high-volume training pistol. The 10mm cartridge costs roughly 40% more per round than 9mm, making proficiency shooting an expensive proposition. Furthermore, the manual safety variant requires consistent, ingrained training to disengage under stress, a skill many defensive pistol courses don't emphasize, potentially creating a dangerous fumble point if not mastered.

What's in the box?

You receive the pistol, two 10-round steel magazines, a cable lock, and the operator's manual. Notably, it does not include an optics plate; the slide is cut for the SIG PRO RX footprint, requiring a specific, separate purchase to mount common micro red dots like the Holosun 507K. Like most Sig Sauer pistols, expect to spend an additional $50-$80 to actually use the "optic-ready" feature unless your chosen optic has a native fit.

Is the Sig Sauer P320 XTEN Carry Comp worth it at $947.99?

At this price, it's worth it for the shooter who needs a compensated, optics-capable 10mm in a carry size and values the P320 modularity ecosystem. You're paying for the integrated comp machining, the XSeries trigger, and the night sights—features that would add $300+ to a base model. If you just want a 10mm pistol and plan to never mount an optic, a base Glock 20 or 40 at nearly $300 less is the more economical choice.