The SIG Sauer P320-XFull in 9mm Luger brings the proven modularity of the P320 platform into a carry-friendly 4.7" package that balances accuracy, control and everyday use, and as a semi-auto striker-fire pistol it suits range days, duty carry, and home defense with equal confidence. The 4.7" optic-ready, serrated slide and barrel deliver tight groups and a sight plane that is comfortable for extended shooting, while the XRay3 day/night sights provide high visibility in low light or bright sun and the rear sight plate accepts the Romeo1PRO and PRO RX footprint optics for fast target acquisition. The black polymer grip module includes an extended beavertail and deep undercut for a high hand position and improved recoil control, and it accepts the removable magwell and grip weight to tune balance and reload ergonomics for competition or tactical use. With a 10+1 capacity, black frame finish and durable construction from SIG Sauer, the P320-XFull is built around a platform favored by professionals and enthusiasts who want a customizable, optic-ready 9mm handgun that complies with FFL transfer requirements for legal purchase and transfer.