LBE Unlimited Mil-Spec Buffer Tube Features The LBE Unlimited Mil-Spec Buffer Tube is manufactured to mil-spec dimensional standards ensuring compatibility with the wide range of mil-spec collapsible stocks already on the market. Measuring 11 inches in length the tube provides the standard 4 position adjustment range expected on an AR-15 or M4 pattern rifle build. A matte black finish gives the tube a durable corrosion resistant exterior that blends with most factory and aftermarket AR-15 finishes. Precise manufacturing tolerances help ensure the tube locks up properly with the receiver extension and buffer components for consistent cycling. LBE Unlimited designs and builds its components in the United States from upper receivers and bolt carrier groups to barrels grips gas tubes buffer tubes and springs. This focus on domestic manufacturing supports American jobs while allowing for rigorous quality control throughout the production process. Because this buffer tube is a direct mil-spec replacement it installs into AR-15 and M4 pattern lowers without requiring special fitting or modification. For builders and owners looking for a trustworthy receiver extension from a company that stands behind its parts the LBE Unlimited Mil-Spec Buffer Tube is a solid foundation for any AR-15 build. LBE Unlimited Mil-Spec Buffer Tube Specifications Manufacturer: LBE Unlimited Model: Mil-Spec Buffer Tube Compatible Hosts: AR-15 M4 Color: Black Finish: Matte Position: 4 Position Length: 11 Available At: GrabAGun