The SIG Sauer P320 Full-Size is a striker-fired, modular pistol known for its exceptional ergonomics, accuracy, and reliability. Designed with a polymer frame and stainless steel slide, it supports SIG’s modular fire control unit (FCU), enabling caliber and grip changes with ease. A favored choice for duty, competition, and defense. Featuring a 4.7-inch barrel and 17-round capacity, it is an ideal choice for home defense, duty use, and target shooting. The serialized trigger group can be easily removed and dropped into different-sized grip modules, slides, and calibers. A PRO-series optic footprint for direct mounting of compatible micro red dot sights while retaining rear dovetail sights.