YHM 110 Flat Top Stripped Upper Receiver — 5.56 NATO

The Yankee Hill Machine YHM 110 is a flat top, stripped AR-15 upper receiver designed for builders and gunsmiths assembling or upgrading an AR-15 platform. It is produced from 7075-T6 aluminum and finished in matte black anodize. This receiver accepts standard upper receiver components and mates with Mil‑Spec AR-15 lower receivers to provide a reliable foundation for a complete upper assembly.

Key Specifications

• The receiver is made from 7075-T6 aluminum (forged).
• The finish is hardcoat anodized matte black.
• The unit is supplied as a stripped upper receiver (does not include internals or accessories).
• The listed caliber/gauge is .223 REM/5.56 NATO.
• The receiver accepts Mil‑Spec AR-15 lower receivers.
• The inside is coated with dry film lube.
• Feed geometry includes M4 style feed ramps with "T" markings.
• It accepts standard upper receiver parts such as dust covers and forward assists.
• Dimensions (H x W x L) are given as 2.80 x 5.20 x 13.25.
• The listed weight value is .5.

This stripped YHM 110 flat top upper provides a solid, Mil‑Spec‑compatible starting point for a customized AR-15 build. Its forged 7075-T6 construction and hardcoat anodized finish deliver a durable platform that integrates with standard AR components. Designed for builders who require a dependable receiver blank, the YHM 110 is suitable for a wide range of applications from target and precision assemblies to general-purpose AR builds.