The heavy duty Strike Industries AR15/AR10 Advanced Receiver Extension Tube adds adjustability and reliability to your modern sporting rifle. These AR15 Buffer Tubes from Strike Industries have distinctive scalloping that decreases friction with the stock and reduces weight while retaining strength in areas that get the most stress. With impeccable fit and finish, the Strike Industries 7-Position Buffer Tube fits a wide variety of platforms solidly, with absolutely no wobbling. Make your old standby or new build AR stand out from the pack with the Strike Industries Advanced Buffer Tube. Specifications for Strike Industries Advanced Receiver Extension Buffer Tube: Manufacturer: Strike Industries Finish: Mil-Spec Fabric/Material: 7075-T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Length: 7.28 in Diameter: 1.45 in Condition: New Features of Strike Industries Advanced Receiver Extension Buffer Tube 7position MILSPEC diameter buffer tube Fits onto any standard AR15 receiver. Finer length of pull adjustment. Supported buffer retainer Compatible with Strike Industries Pit Viper Stock Package Contents: Strike Industries Advanced Receiver Extension Buffer Tube 1x 7Position Advanced Receiver extension