- Six position AR-15/M16/M4 receiver extension assembly
- Includes Mil-Spec receiver extension/buffer tube, receiver lock plate, lock-nut/castle nut, carbine buffer and carbine buffer spring
- Buffer tube is Mil-Spec diameter and 6061 aluminum
- Carbine buffer weight is 3 oz
Designed to please the most demanding shooter, the BS-5 Alpha buttstocks are a great way to increase or decrease the length of pull on an AR-15 rifle, without giving up any comfort. The overmolded contact surfaces provide an enhanced support and comfort and non-slip shoulder contact. Simple installation requires no gunsmithing.