Yankee Hill Machine YHM-125-BILLET | Billet AR-15 Lower

The Yankee Hill Machine YHM-125-BILLET is a billet AR-15 stripped lower receiver machined from 7075-T6 aluminum with a matte black hardcoat anodized finish. It is intended for use in custom AR-15 builds and is suitable for competition or range-oriented sport shooting. The receiver accepts Mil‑Spec upper receivers and standard AR parts (except a trigger guard) and includes oversized magazine well chamfers and a machined oversized trigger guard for improved ergonomics. Note that this is a stripped lower and requires a lower parts kit, buffer assembly, and stock to complete.

Product Specifications

• The manufacturer is Yankee Hill Machine.
• The model/part number is YHM-125-BILLET.
• The product type is a Stripped lower receiver.
• The receiver is machined from 7075-T6 aluminum.
• The finish is Black Hardcoat Anodized.
• The design includes oversized magazine well chamfers for easier magazine seating.
• The receiver accepts Mil‑Spec upper receivers.
• The lower accepts all generations of PMAGs according to the manufacturer.
• The unit includes a built-in oversized machined trigger guard.
• The item requires a lower parts kit, buffer assembly, and stock to complete a functional firearm.
• The lower is machined 100% in-house from billet billet material according to the manufacturer description.
• The listed dimensions are 2.35 x 4.40 x 8.65.
• The listed weight is .85.
• The product is designed for the AR-15 platform.
• UPC: 816701017618.

This billet lower provides a durable, upgrade-ready foundation for custom AR-15 builds where fit, finish, and magazine handling matter. Its billet construction and hardcoat anodize deliver a high-quality base for competition or precision-oriented sport shooting projects, and the oversized magwell and machined trigger guard improve ergonomics and reload speed for serious builders.