Sniper Commercial Spec 6 Position Buffer Tube Black. It doesnt require a moon-bent receiver as the top half of the commercial spec buffer tube is cut off at the rear end. This leaves room for effective tuning of the buffer and a smoother operation. Start by backing out the positions you want to be able to set the tube to a position where it is no longer under torqued then re-tighten the tube to the desired position. The 6 position adjustable design allows the shooter to adjust the tube to the most comfortable position and the rubber end cap makes it easy to turn the tube to the desired length. Specifications for Sniper Commercial Spec 6 Position Buffer Tubes: Manufacturer: Sniper Color: Black Finish: Anodized Fabric/Material: Aircraft Aluminum Length: 7.125 in Condition: New Features of Sniper Commercial Spec 6 Position Buffer Tubes Anodized Aircraft Aluminum Construction 7 1/8in Length 6 position adjustable Package Contents: Sniper Commercial Spec 6 Position Buffer Tube Sniper ASBT01: Commercial Spec 6 Position Buffer Tube Black