Yankee Hill Machine YHM A3 Upper Receiver Assembly

The Yankee Hill Machine (YHM) A3 Upper Receiver Assembly is designed for use on AR-15 platform rifles and builds. Machined and finished by YHM, this upper includes M4-style feed ramps, a functioning forward assist, and an integrated dust cover for routine range and field use. The interior is coated with a dry film lubricant to promote smooth operation and reduce wear.

Key Specifications

• The material is 7075-T6 forged aluminum.
• The finish is anodized.
• The fit is made for AR-15 platform lower receivers.
• The assembly includes a forward assist and a dust cover.
• The feed ramps are M4-style with "T" markings.
• The inside surface is coated with dry film lube.
• The product model is A3 Upper Receiver.
• The product dimensions are 2.90 X 5.20 X 13.25.

This A3 upper provides a straightforward, factory-oriented option for builders and users who require compatibility with standard upper parts and mil-spec lowers. Its forged 7075-T6 construction and anodized finish deliver a durable platform for integration into an AR-15 build, while M4-style feed ramps and internal lubrication support reliable function. Consider this upper when you need a solid replacement or a baseline component for a reliable, serviceable AR-15 build.