Colt Forged M4 Upper Receiver Assembly
Built to the correct military specifications
Colt ‘M4’ marked upper. These are not ‘C’ marked. CAGE codes may be roll marked but are normally etched/dot matrix marked.
Features:
- 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.
- Fully Assembled with forward assist, and ejection port cover
- Mil-Std 1913 Rail for mounting optics and accessories
- Machined for use with barrels that use an M4 barrel extension
- T-markings for addressing the remounting of optics
- 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




Taylor (verified owner) –
Great product. Fit everything perfectly. Customer service was awesome too. Responded quickly and easily! Will do business again!
Alex T. (verified owner) –
Can’t beat Colt uppers. Especially when they’re in mint condition.
ROBERT (verified owner) –
Fit great with my Colt lower, fast delivery.
I carried Colts Arms in Southeast Asia, 5 years Military service.
Joseph (verified owner) –
Perfect condition and good to go!
Aaron (verified owner) –
Perfect quality, you can’t go wrong with one of these. Perfect fit and finish, as well as fast shipping from rooftop as always.