OA Defense 9MM 15 Rounds Pistol Magazine Black 15. Specifications for OA Defense 9MM 15 Rounds Pistol Magazine: Manufacturer: OA Defense Caliber: 9mm Luger Magazine Capacity: 15 Round Color: Black Finish: Black Additional Features: OA Defense 2311 Magazine Handle Color: Black Number of Rounds: 15 Features of OA Defense Pistol Magazine 9MM 15 Rounds Fits 2311 Steel Construction Polymer Floorplate Black: Steel Construction Package Contents: OA Defense Pistol Magazine 9MM 15 Rounds Fits 2311 Steel Construction Polymer Floorplate Black OA Defense OA-2311-MAG-15: 9MM 15 Rounds Pistol Magazine Black 15