Sig Sauer P320 XTEN 10mm Auto 5in Nitride Black Pistol - 10+1 Rounds - This addition to the SIG P320 family brings all of the features of the X series of pistols into a carry-style handgun in 10mm for shooters and hunters looking for performance to the power of 10. The P320-XTEN comes standard with a 5in bull barrel, Xray3 day/night sights, and an X optic-ready slide with front and rear serrations. For those looking for even more precision, every P320-XTEN is optic-ready and compatible with the SIG SAUER ROMEO2 reflex optic which is designed to withstand the abuse the 10mm cartridge delivers. To reduce the recoil, a completely redesigned X polymer grip module provides a strong purchase and stippled finish and makes shooting comfortable for any type of round. Each P320-XTEN comes standard with two 15-rd magazines. The new SIG P320-XTEN takes performance to the power of 10. Optic Ready Slide compatible with Romeo2 and Trijicon RMR (requires sealing plate) 5in Bull Barrel All-new 10mm/45 Auto Grip Module Flat X trigger with 90-degree break XRAY 3 Day/Night Sights (2) 10rd Steel Magazines *Please Note - The P320-XTEN is not compatible with 9/357/40 caliber parts and accessories. Only .45 and 10mm parts and accessories are compatible with this model.