The SIG Sauer P320-XTEN is a full-size, striker-fired 10mm Auto pistol that brings X-Series ergonomics to a high-power cartridge. Introduced in 2022, it is built around the modular P320 fire-control unit but uses a dedicated 10mm/.45-size X-Series polymer grip module with a deep trigger-guard undercut, extended beavertail, and aggressive stippling for a high, locked-in hold that helps manage 10mm recoil.


A 5-inch carbon-steel bull barrel and Nitron-finished stainless slide add forward mass and a 6.8-inch sight radius. Overall size is about 8.5 inches long, 5.6 inches tall, and 1.3 inches wide; unloaded weight is roughly 33 ounces. Capacity is 15+1 with two steel magazines included. The slide is optic-ready for the ROMEO2 and RMR (sealing plate required), with XRAY3 day/night sights as backup. A flat X-Series trigger breaks near 90 degrees at about 4.5-5 pounds. An M1913 rail accepts lights. It is a duty-sized 10mm for range, woods, and hunting use.


 


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