Springfield Armory(R) XD Mod.4 OSP is a semi-automatic pistol chambered in 9mm Luger with a 16+1 round capacity. It features a 4 in barrel and an OSP optic-ready slide for mounting a compatible reflex sight. The pistol uses a black polymer frame and maintains the established ergonomics and controls of the XD platform.Key Features Chambered in 9mm Luger 4 in barrel 16+1 round capacity OSP optic-ready configuration Black slide and polymer frame XD Mod.4 configurationSpringfield Armory(R) builds modern firearms that blend proven designs with contemporary features for today's shooters. The brand is known for duty-capable handguns and performance-oriented platforms that support optics lights and high-round-count training. Springfield Armory focuses on practical reliability shooter-friendly ergonomics and consistent value across its lineup.