P80 G150 AR-15 80% Receiver Kit – Gray

The P80 G150 AR-15 80% Receiver Kit – Gray represents a precision-engineered foundation for the custom AR-15 platform. Manufactured by Polymer80, this build kit provides the core components necessary to complete a legally compliant, unfinished lower receiver. The kit is designed for the dedicated builder who requires a durable, lightweight gray polymer frame with verified dimensional accuracy. Each component is manufactured to strict tolerances, ensuring compatibility with standard AR-15 mil-spec upper assemblies and fire control groups. This kit is offered at a competitive price point that reflects the quality of materials and engineering standards expected from the Polymer80 brand.

Overview

The P80 G150 AR-15 80% Receiver Kit – Gray is a semi-finished lower receiver kit that requires additional machining, finishing, and assembly by the end user. The receiver body is constructed from reinforced polymer to provide structural integrity while reducing overall weight. The kit includes the 80% lower receiver, a jig system for precise drilling, and necessary fixture components to guide the machining process. This product is intended for individuals who possess the technical skills, tools, and legal knowledge to complete the receiver in compliance with all applicable federal, state, and local laws. The gray finish offers a non-reflective surface that resists wear and corrosion during handling and assembly.

Features & Specs

This build kit emphasizes repeatable accuracy and structural consistency. The P80 G150 AR-15 80% Receiver Kit – Gray is machined from a high-strength polymer blend developed by Polymer80 to meet the demands of the AR-15 platform. The receiver pocket dimensions are cast to near-net shape, requiring the builder to remove material from the trigger pocket, safety selector holes, and rear takedown detent channel. The included jig system uses hardened steel bushings to maintain bit alignment during drilling operations. Below are the key specifications and features:

• Reinforced gray polymer 80% lower receiver body with integral trigger guard; accepts all mil-spec AR-15 lower parts kits and buffer tube assemblies.
• Precision-machined jig with indexed drill guide bushings for the trigger pin, hammer pin, safety selector, and bolt catch pin holes; jig is reusable for multiple builds.
• Includes receiver fixture block, drill bit set (sizes #28, #30, and 5/32 inch), and step-by-step assembly instructions; no specialized tooling required beyond a standard drill press or hand drill.

• Accepts standard AR-15 magazines; compatible with .223 Remington, 5.56 NATO, and .300 Blackout upper assemblies; overall receiver length is 9.5 inches with a standard buffer tube extension.
• Weight of the completed lower receiver (without parts kit) is approximately 8.2 ounces; the polymer material features a textured grip area for improved handling during assembly and use.
• Manufacturer part number: P80-G150-GRY; the receiver is classified as an 80% lower, meaning it is not a firearm and does not require an FFL transfer at the time of purchase.

Who It’s For

The P80 G150 AR-15 80% Receiver Kit – Gray is intended for experienced firearm builders who understand the legal requirements and machining processes involved in finishing an 80% lower receiver. This kit is suitable for hobbyists, custom builders, and enthusiasts who prefer to complete their own firearm component from a semi-finished state. It is not recommended for first-time builders without prior experience using drill presses, jigs, or measuring tools. The builder must be legally eligible to possess and manufacture a firearm under federal and state law. This product is designed for those who value hands-on assembly, component-level control, and the ability to customize the lower receiver to their exact specifications.

Shipping & FFL

This P80 G150 AR-15 80% Receiver Kit – Gray is classified as an unfinished receiver blank and is not a firearm under current federal regulations. As such, it may be shipped directly to your residence or business address without requiring transfer through a Federal Firearms License (FFL) dealer. However, it is the sole responsibility of the purchaser to verify that possession and completion of this kit are legal in their state, county, and municipality. Some jurisdictions, including but not limited to California, New York, New Jersey, Connecticut, and Washington D.C., have specific restrictions or prohibitions on 80% receivers. By purchasing this product, you certify that you are not prohibited from owning or manufacturing firearms under federal or state law, and that you will complete the receiver in compliance with all applicable laws. We recommend consulting with a qualified attorney if you have any legal questions regarding the completion or possession of this product.