Sig Sauer P320 X-Full, Semi-automatic, Striker Fired, Polymer Frame Pistol, Full Size, 9MM, 4.7 Carbon Steel Barrel, Nitron Finish Slide, Black, ROMEO-X PRO 2 MOA Optic, PRO Optic Footprint, XRAY3 Day/Night Sights, 10 Rounds, 2 Magazines 320XF-9-BXR3-RXX-10 The P320-XFULL completes the X series of pistols as a full-size entry model. Its 4.7-inch slide and barrel provide exceptional accuracy and comfort while maintaining the ability to carry it concealed. The grip module is compatible with the removable magwell and grip weight, featuring an extended beavertail and deep undercut for a high grip and improved recoil control. The XRay3 day/night sights deliver high visibility in all lighting conditions, and the rear sight plate assembly allows for direct mounting of the new Romeo1PRO optic, as well as the popular PRO RX footprint.