Precision Forged From High-Strength 7075 Alloy For High Quality Custom Builds

Stripped, A3-style upper receiver is precision machined from a 7075 T6 aluminum alloy forging to USGI dimensions, ready to mate with the mil-spec lower and internal components of your choice. Includes M4-type feed cuts and alphanumeric position markers stamped into the rail slots. Extra hard 7075 T6 alloy offers superb strength to handle the battering of thousands of firing cycles. Hardcoat anodized to resist wear, add strength, and protect from corrosion. Hard dry-lube surface treatment protects the anodizing from scuffs and reduces friction between bolt carrier and receiver walls for ultra-smooth operation, less wear, and longer service life. Matte black finish matches most factory upper receiver and barrel finishes. "Complete" model available with port door and forward assist.