Yankee Hill Machine A3 AR-15 Assembled Upper Receiver - 7075-T6 Aluminum - Black

The Yankee Hill Machine A3 upper receiver is a forged AR-15 flat-top assembly precision-machined from 7075-T6 aluminum and finished in a corrosion-resistant hardcoat anodized matte black. The A3 (flat-top) configuration provides a full-length Picatinny rail across the top for mounting any standard optic or iron sight, while M4-style feed ramps and engraved "T" markings make optic alignment quick and repeatable. The interior of the receiver is coated with a dry-film lube for smooth bolt carrier travel and reliable cycling.

This is an assembled upper, meaning the dust cover and forward assist are installed at the factory. The receiver accepts all standard Mil-spec upper receiver parts, so you can drop in the barrel, bolt carrier group, charging handle, and handguard of your choice to complete a custom AR-15 rifle or pistol build.

Designed for builders who want a lightweight and durable foundation for a custom AR-15, the YHM A3 flat-top upper is made in the USA to Yankee Hill Machine's exacting tolerances and is ready to anchor your next build.