OA Defense 2311, Single Action, Semi-Automatic, Metal Frame Pistol, Full Size, 9MM, 5 Barrel, Matte Finish, Black, Tritium Night Sights, Optics Ready, 17 Rounds, 3 Magazines, Includes 3 Optic Mounts for RMR, Delta Point Pro, and RMSc, Custom OA Defense Range Bag OA-2311-FLSZ-KIT-BLK-STD-17 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.