Description
Colt Manufacturing
M4 Upper Receiver
P/N: SP63528
Genuine Colt M4 upper receiver assembly built to Colts M4 specifications.
These upper receivers feature M4 feed ramps, and a pre-installed dust cover and forward assist. Hard Coat Type III anodized with dry film lube on the interior.
These uppers come with varying forging marks, some marked with CAGE codes, and some without.
What’s Included
1x Colt M4 Upper Receiver
Specifications
- Machined to Colt Milspec Standards
- 7075-T6, Type III Hardcoat Anodized
- M4 Feed Ramps
- Includes Forward assist and dust cover
- Dry Film Lube on interior
- Genuine Colt Factory Parts
- Made in the USA
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