AIM Sports Inc AR15 Pistol Buffer Tube Black Small Black Small. Specifications for AIM Sports Inc AR15 Pistol Buffer Tube: Manufacturer: AIM Sports Inc Color: Black Fabric/Material: Aluminium Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Features of AIM Sports Inc AR15 Pistol Buffer Tube Fits standard AR15 and AR10/M5 (.308) lower receivers 7075 Aluminum Tube only (no endplate/buffer/spring) Uses a stardard end-plate and standard castle nut Package Contents: AIM Sports Inc AR15 Pistol Buffer Tube What firearm models does the manufacturer say AIM Sports Inc AR15 Pistol Buffer Tube is compatible with? The manufacturer says that AIM Sports Inc AR15 Pistol Buffer Tube is compatible with AR-15AIM Sports Inc ARPTUB: AR15 Pistol Buffer Tube Black Small ARPTUB Black Small