This Aero Precision AR-15 / M4 Carbine Receiver Extension / Buffer Assembly is one of our most popular buffer kits. This kit uses a true mil-spec 7075-T6 aluminum receiver extension (buffer tube) with drain hole and 6 positions of adjustment. The receiver extension is also type 3 hard anodized for a durable finish and has dry film lube applied to the inside diameter of the tube. The kit also includes a chome silicon buffer spring for longer service life.

The Aero Precision AR-15 Carbine Buffer Kit includes a MIL-SPEC diameter, 6-position receiver extension machined from 7075-T6 aluminum. A standard carbine recoil buffer, spring, end plate and castle nut are also included. NOTE: Buttstock not included. Weight: 9.8 oz Back Specifications Brand: Aero Precision Buffer: 3.25 Carbine - Standard 3.00 oz Platform: AR-15 Type: Stock Hardware Kit MPN#: APRH100151