Bcm M4 Upper Receiver Assembly (w/ Laser T-markings)

Precision machined to correct Mil-Specs from 7075 T6 Forgings extension, providing the user with superior strength when dropped or when mortaring malfunction clearance drills. Includes Mil-Spec Forward Assist with heat treated tool steel pawl, with press fit and pinned cap. Hard Coat Anodized per Mil-A-8625F, Type III, Class2. Dry Film Lube on interior bore per Mil-Specs. As with all BCM products, Made in the U.S.A.