SB Tactical’s AR-15 Pistol Buffer Tubes are engineered to provide optimal fit with SB pistol stabilizing braces. They have the correct 1.2" O.D. for pistol buffer tubes to provide the correct internal clearance for pistol-weight buffers and springs. There are two models: the strong Standard Pistol Buffer Tube strong can be used in any AR-15 pistol installation, even if you are not installing an SB Tactical brace. The strongSTDT C Collared Buffer Tube strong has a 1-3/4" raised area, the "collar" machined into the exterior to minimize unwanted rotation and slippage of your SB Tactical brace. Machined from extra-strong 7075 T6 aluminum Type III har Mfg: Sb Tactical
