This kit contain all the parts necessary to install a Telestock on your .308 / AR-10 rifle. The high quality stock features a molded-in Windham Weaponry logo and a completely assembled locking latch. A 6 Position Receiver Extension is included, along with the Locking Nut, Positioning Plate and Rear Sling Loop. A high quality .308 CAR Length Action Spring, and a CAR Buffer with aluminum body and solid weights. All parts made in U.S.A.