Yankee Hill 110BILLET Billet Upper Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Anodized Receiver for AR-15

The Yankee Hill 110BILLET AR-15 billet upper receiver brings a fresh, purpose-built design to your rifle build. Unlike the cookie-cutter uppers crowding the market, this 5.56 NATO upper was machined in-house from 7075-T6 aluminum billet and shaped to stand out on the bench and in the field. If you're assembling a hunting rifle, competition build, or range gun and want an upper that reflects genuine engineering rather than generic tooling, this one delivers—and it plays nicely with mil-spec lower receivers so your existing components stay in the game.

Yankee Hill machines every unit in-house, which means tighter control over geometry and finish. The 7075-T6 aluminum alloy is strong enough to handle repeated cycling and heat, while the hardcoat anodizing—applied to military specifications or better—locks in durability. M4-style feed ramps are built in to ensure reliable feeding, and a dry film lube applied to the interior reduces friction without the mess of wet lubricants. Whether you're upgrading an existing lower or starting fresh, standard upper receiver parts (dust covers, forward assists, etc.) bolt on as expected.

This is Yankee Hill's first billet upper receiver, and it shows the care that goes into their lower offerings. It's not a tweaked casting or stamping—it's a deliberate design built to run hard and look good doing it. If you run a mil-spec lower, you already know it will fit and function correctly.

Key Features

• Machined 100% in-house from 7075-T6 billet aluminum
• Hardcoat anodized matte black to military specification or better
• M4-style feed ramps for reliable chambering
• Interior dry film lubricant for smooth operation
• Accepts standard upper receiver parts and accessories
• Compatible with mil-spec lower receivers
• Distinctive, eye-catching profile

Specifications

Brand	Yankee Hill Machine Co
Model	110BILLET
Caliber	5.56 NATO
Material	7075-T6 Aluminum (Billet)
Finish	Hardcoat Anodized Matte Black
Feed Ramps	M4 Style
Lower Receiver Compatibility	Mil-Spec
Manufacturing	100% In-House Machined

Frequently Asked Questions

Will this billet upper work with my current AR-15 lower receiver?

Yes, the 110BILLET is designed to accept mil-spec lower receivers and will fit and function with your standard lower.

What makes 7075-T6 aluminum a good choice for an upper receiver?

7075-T6 is a strong, durable aluminum alloy that handles the stresses of firing and cycling while remaining lightweight. Yankee Hill chose it for both performance and the ability to create the detailed billet design.

Are standard AR-15 upper receiver parts compatible with this upper?

Yes, it accepts standard upper receiver parts including dust covers, forward assists, and other accessories, so you can build or modify your rifle without compatibility concerns.

What is included with this upper receiver?

The product includes the billet upper receiver machined and anodized to specification. Consult the product listing or contact Bosque Outdoors for details on what components may be included in your purchase.