Angstadt Arms AA45BUFKIT Buffer Kit with Black Finish & weighs 8oz for 9mm Luger & 45 ACP AR-15 Includes Carbine Buffer Spring

Complete 8oz 9mm AR-15 buffer kit gives you everything you need to get your 9mm or 45 ACP AR-15 running smoothly. It is compatible with both GLOCK and Colt style magazines.