The Springfield Armory XD Mod.4 OSP delivers a full-size grip and 4" barrel in an optic-ready platform configured for carry and range use. The OSP slide accepts direct-mount micro red dot sights and pairs with Springfield's Mod.2 ergonomics for a grip that fits a wide range of hand sizes. This variant ships with a 10-round magazine in place of the standard 16-round magazine. 9mm, 10+1 capacity 4" barrel Optic-ready OSP slide with direct-mount red dot compatibility Mod.2 grip ergonomics Accessory rail Striker-fired action 10-round magazine included