The Yankee Hill Machine Stripped A3 upper receiver is a forged 7075-T6 aluminum flat-top receiver finished in hardcoat matte black. It features M4-style feed ramps with “T” markings and an internal dry-film lube coating, and is designed to accept standard AR-15 upper parts. This unit ships as a stripped upper and does not include charging handle, bolt carrier group, barrel, handguard, or other assembly components.
Key Specifications
- The receiver is made from 7075-T6 forged aluminum.
- The finish is hardcoat anodized matte black to military specifications or better.
- The listed caliber/gauge is .223 Rem / 5.56 NATO.
- The receiver features M4-style feed ramps with “T” markings.
- The interior is coated with dry film lube for reduced friction.
- This unit accepts standard upper receiver parts (dust covers, forward assists, etc.).
- The receiver accepts Mil‑Spec lower receivers for fit and function with standard AR-15 lowers.
- The product is supplied as a stripped upper receiver and does not include forward assist or dust cover assembly.
This stripped A3 upper is a no-nonsense component for builders and service technicians seeking a durable, mil-spec-compatible flat-top receiver. Its forged 7075-T6 construction and hardcoat anodize provide a solid foundation for a wide range of AR-15 builds, while M4 feed ramps and internal dry-film lube support consistent operation when paired with the correct components. Note: this item requires a charging handle, barrel, handguard, gas system, BCG, and associated parts to complete a functional upper. Not available for direct shipment to California.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
