The SIG SAUER P320 XTEN Carry Comp is a striker-fired semi-automatic pistol chambered in 10mm with an integrated compensator and optics-ready slide. The 3.8-inch barrel keeps the overall length at 7.6 inches, making this one of the more compact 10mm options available. Capacity is 15+1 rounds; two 15-round steel magazines are included. 
 

Key Specifications 

• Manufacturer: SIG SAUER 
• Model: P320 XTEN Carry Comp 
• Type: Semi-Auto Handgun 
• Caliber: 10mm 
• Barrel Length: 3.8 inches 
• Overall Length: 7.6 inches 
• Capacity: 15+1 rounds (two 15-round steel magazines included) 
• Finish: Nitron black 
• Frame: Polymer with Polymer X Grips 
• Sights: XRAY3 Day/Night Sights 
• Optics Ready: Yes 
   

Features 

The integrated compensator is the main differentiator here. It reduces muzzle rise and felt recoil noticeably when shooting full-power 10mm, which matters for fast follow-up shots at that power level. The optics-ready slide is cut to accept common red dot footprints including the Romeo2, which lets shooters mount a dot without adapter plates. XRAY3 day/night sights work without a mounted optic and provide a usable backup. 
 
The P320's modular FCU design is present here -- the fire control unit can be moved between frames if needed. The polymer frame and Nitron finish keep weight reasonable given the 10mm chambering. At 3.8 inches of barrel in 10mm, velocity will be lower than a longer-barreled option, which is a real trade-off for a carry-size pistol in this caliber.

User feedback on the SIG SAUER P320 XTEN Carry Comp in 10mm is broadly positive with consistent notes on a few trade-offs.

The optics-ready feature draws frequent praise. Owners appreciate being able to mount a red dot directly without third-party adapter plates, and many report improved target acquisition speed compared to iron sights alone.

Recoil management with the compensator is mentioned positively by multiple owners. The 10mm round is genuinely snappy in a compact pistol, and the comp makes a noticeable difference in keeping the muzzle on target during fast strings.

Build quality and reliability get consistent positive marks. The P320 platform is well-established and owners of the XTEN variant report similar durability.

Size and weight for daily carry generate the most critical discussion. At 7.6 inches overall and full 10mm dimensions, this is not a discreet carry option for most people. Users who evaluate it primarily for range or duty use are generally satisfied; those hoping to conceal it under light clothing may find it challenging.

Trigger feel is somewhat divided -- many owners describe it as smooth and positive, while a portion find it less crisp than they'd prefer for precision work. Accessories and modifications are discussed actively, as the P320 ecosystem has good aftermarket support.