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
Jared G. (verified owner) –
Excellent and fast shipping and service got to me fast and without issue. May cancel some other orders with other companies a stick with theses guys. Upper came in excellent condition I’m using it for a mk12 build.
Mark from U. (verified owner) –
Best dang ol upper receiver, I tell you hwat.
Nathanial W. (verified owner) –
Solid milspec upper as expected. The added lunch was a bonus! Rooftop never disappoints!
Arnel D. (verified owner) –
The upper was just as described, great fit and finish and shipped fast. I would not hesitate to purchase from Rooftop Defense again, so buy with confidence.
Luis L. (verified owner) –
Outstanding fit and finish. Shipped fast like all my other orders. Buy with confidence!