This is a LBE Unlimited Buffer Tube, model MBUF002-CG.
LBE Unlimited is a quality manufacturer of AR-15 parts and accessories. This particular item is an AR-15 Mil-Spec diameter carbine receiver extension. This buffer tube can be used as a replacement unit or as a spare for a new build. This unit come pre-threaded standard and features 6 position notches.
Features:
Colt Gray finish
AR-15 Milspec diameter recoil buffer tube
Carbine receiver extension
Pre-threaded
