WMD Guns Carbine Buffer Tube Features The WMD Guns Carbine Buffer Tube is a mil spec receiver extension machined from lightweight 7075 aluminum extrusion giving builders a strong reliable foundation for their AR-15 or M16 build. It accepts M4 style adjustable carbine buttstocks and supports six positions allowing the shooter to dial in length of pull for their body size body armor or preferred shooting stance. This adjustability makes the rifle more versatile across different shooters or different roles from home defense to range use. Compatibility with standard M4 style stocks means builders are not locked into a proprietary stock system when choosing this buffer tube. What sets this buffer tube apart is its NiB-X nickel boron coating applied after machining to protect the aluminum extrusion from corrosion while providing a smooth low friction surface. This finish holds up well against moisture sweat and general wear which is valuable for a component that sees constant contact with the buttstock during use. The nickel finish also gives the buffer tube a distinctive appearance compared to the standard black anodized tubes most builders are used to seeing. For AR-15 and M16 builders who want both functional reliability and a standout finish on their receiver extension the WMD Guns Carbine Buffer Tube is a solid choice available for sale at GrabAGun. WMD Guns Carbine Buffer Tube Specifications Manufacturer: WMD Guns Model: Carbine Buffer Tube Compatible Hosts: AR-15 M16 Color: Nickel Finish: NiB-X Positions: 6 Available At: GrabAGun