Yankee Hill Machine stripped AR-15 upper receiver in a flat-top (A4) configuration. The MIL-STD-1913 top rail accepts optics, sights, and rail accessories, and the receiver is cut for standard mil-spec barrel nuts and components. It ships stripped, with no forward assist, dust cover, or accessories installed, so you can build it out to your spec. Black.
Features:
The upper receiver is not the serialized component and ships as a non-FFL part. Pairs with standard mil-spec AR-15 parts.
