Guntec AR10 A2 Buffer Tube Set Features The Guntec AR10 A2 Buffer Tube Set is built around a rifle length A2 pattern tube machined from T6 6061 aluminum giving it the strength to handle repeated cycling from a .308 caliber buffer and spring without flexing or wearing prematurely. The matte finish matches standard AR10 hardware for a clean factory look once the stock is installed over it. Because the tube is drop in ready it mounts directly to a compatible AR10 lower receiver without additional fitting saving a builder time at the bench. The included chrome buffer spring is rated specifically for .308 caliber operation helping the action cycle smoothly under the added recoil of a larger cartridge. Rounding out the kit is a carbine end plate and a castle nut both needed to properly index and secure the buffer tube to the receiver extension. Including these parts in one package means a builder is not left sourcing small hardware separately from multiple vendors. At just 3.6 ounces the tube itself keeps the rear of the rifle from feeling back heavy which helps maintain a balanced AR10 build for range use or hunting applications. Made in the USA the Guntec AR10 A2 Buffer Tube Set is a dependable foundation for any .308 AR10 build. Guntec AR10 A2 Buffer Tube Set Specifications Manufacturer: Guntec Model: AR10 A2 Buffer Tube Set Material: Aluminum Type: AR10 Rifle Buffer Tube Finish: Matte Includes: Buffer Tube Buffer Spring Carbine End Plate Castle Nut Weight: 11.5 oz Available At: GrabAGun