80% Lower Receiver Billet .308 / AR-10 – Anodized Black 6061-T6 Aluminum

Description

Serious builders demand a serious foundation. Step up to the unmatched integrity of a billet-machined 80% lower receiver, engineered specifically for the powerful .308 Winchester/7.62x51mm platform. This isn’t a cast part; it’s precision-milled from a solid block of aerospace-grade aluminum, offering superior strength and a flawless fit for your custom AR-10 or LR-308 rifle build. Take control of your build process with this premium, unmarked component.

Product Overview

This P80-001 80% Lower Receiver is the critical starting point for your .308 build. Machined from 6061-T6 billet aluminum, it provides greater material density and consistency compared to forged counterparts, resulting in enhanced rigidity and a precision-milled finish. The durable Type III hardcoat anodizing provides exceptional corrosion and wear resistance. Sold as a component without fire control group markings, it is designed for knowledgeable builders to complete themselves, offering a truly personalized firearm.

Key Features

• Billet 6061-T6 Aluminum Construction: CNC-machined from a solid block for superior strength, dimensional accuracy, and a clean, modern aesthetic.
• Durable Black Anodized Finish: Hardcoat anodizing provides a tough, corrosion-resistant surface that stands up to harsh elements and heavy use.
• Threaded Bolt Catch Hole: Allows for a secure, screw-in bolt catch pin installation (pin not included) for a rock-solid interface.
• Broached Magazine Well: Precision-cut for smooth, reliable magazine insertion and ejection with minimal drag or hang-up.
• Heavy-Duty Trigger Guard: Integrated and reinforced to accommodate gloved use and provide a robust, snag-free design.
• 100% Made in the USA: Manufactured with pride in the United States, supporting American jobs and craftsmanship.

Technical Specifications

SKU: P80-001
Platform: .308 / AR-10 / LR-308
Material: 6061-T6 Billet Aluminum
Finish: Matte Black, Type III Hardcoat Anodized
Fire/Safe Markings: None (Unmarked)
Bolt Catch Pin Hole: Threaded (6-40 thread, pin not included)
Magwell: Broached
Trigger Guard: Integrated, Heavy-Duty
Country of Origin: United States of America

Compatibility

This 80% lower is designed for the .308 Winchester/7.62x51mm platform and is compatible with most standard DPMS-pattern AR-10 / LR-308 parts kits, upper receivers, and magazines. Always confirm compatibility with your specific upper receiver and parts kit before purchasing. It is not compatible with Armalite AR-10A or SR-25 pattern components without verification.

Legal & Compliance Notice

This product is a component (80% receiver) sold for lawful purposes only, including the manufacturing of a firearm for personal use, where permitted by law. It is not a firearm and requires machining to complete. The buyer is solely responsible for understanding and complying with all federal, state, and local laws regarding the purchase, completion, ownership, and registration of any firearm built using this component. You must be 18 years of age or older to purchase (21+ in some jurisdictions). By completing your purchase, you affirm it is legal for you to possess this item in your jurisdiction.

FAQ

What tools are required to complete this 80% lower?

Completion requires a drill press or milling machine, appropriate end mills and drill bits (typically a 3/8″ end mill for the fire control pocket and specific drill bits for the selector and trigger pin holes), a vise, and basic gunsmithing tools. A dedicated 80% lower jig is highly recommended for precise alignment.

Is this lower compatible with a standard AR-15 parts kit?

No. This is a .308 platform receiver and requires a .308/AR-10/LR-308 specific parts kit, including a trigger group, hammer, takedown pins, bolt catch, and magazine release. Most internal dimensions are larger than an AR-15.

Why is the bolt catch hole threaded?

The threaded hole (6-40) allows for the installation of a screw-in bolt catch roll pin. This provides a more secure installation that is less likely to walk out under the heavy recoil of the .308 platform compared to a traditional smooth roll pin.

Ready to build a .308 with uncompromising quality? Add this American-made billet 80% lower to your cart and start your project today.

Available for purchase and fast shipping to Texas, Florida, Arizona, Nevada, Montana, Wyoming, Idaho, Utah, Alaska, Colorado, Georgia, Tennessee, North Carolina, Virginia, Pennsylvania, Ohio, Michigan, and all other eligible US states.