Oa Defense 2311 w/Plus Kit Full Size Frame 9mm Luger 17+1 5" Black DLC Steel Barrel, Black Optic Ready/Serrated Stainless Steel Slide & Aluminum Frame w/Picatinny Rail, Black Polymer Grip, Ambidextrous, 3 Mags The OA Defense 2311 represents a carefully engineered blend of performance and versatility; designed to deliver blistering speed and accuracy while standing up to the rigors of law enforcement and duty applications. Includes four side plates, three optic mounts RMR, DPP and Holosun K/RMSc footprints and iron sight cover plate, three 17rd magazines, range bag and safety lock.