The SIG SAUER P320 XTEN is a full-size semi-automatic pistol chambered in 10mm with a 5-inch barrel. It uses a modular polymer X-Grip frame and holds 15+1 rounds. The slide features X-Ray 3 day/night sights and a SIG-LOC optic-ready cut. 
 

Key Specifications 

• Brand: SIG SAUER 
• Model: P320 XTEN 
• Caliber: 10mm 
• Action: Semi Auto 
• Capacity: 15+1 
• Barrel Length: 5 in 
• Color/Finish: Black 
   

Detailed Features 

• 5-inch barrel on the P320 modular platform 
• X-Ray 3 day/night sights 
• SIG-LOC optic-ready cut on slide 
• Modular polymer X-Grip frame 
• 15-round magazine capacity

Owners of the P320 XTEN appreciate SIG bringing a serious 10mm option to the P320 platform. The modular frame and familiar P320 controls make the transition easy for anyone already in the SIG ecosystem, and the 15-round capacity stands out in the 10mm market.

The X-Ray 3 sights get consistent praise for day and night visibility. The SIG-LOC optics cut is popular with those who run a dot, though some note the proprietary footprint adds a step when selecting a compatible optic.

Recoil management at 10mm power levels draws a range of opinions. Most owners find the 5-inch barrel and X-Grip frame absorb the recoil well enough for sustained range use. A subset of owners mention the grip width and trigger reach as things to verify before committing, especially for smaller hands.