Polymer80 G150 AR15 80% Lower Receiver Only

The Polymer80 G150 AR15 80% lower receiver only represents a foundational component for the custom builder seeking a lightweight, durable platform. Manufactured from reinforced polymer, this 80% lower receiver requires final machining to complete the fire control group pocket and trigger pin holes, placing the builder in full compliance with federal regulations regarding firearm manufacture for personal use. At a competitive price point well below standard billet aluminum receivers, the G150 offers a cost-effective entry point into the AR-15 platform without sacrificing the structural integrity required for reliable operation.

Overview

The Polymer80 G150 AR15 80% lower receiver only is designed as an unfinished component, meaning it has not yet been machined to accept fire control components. This allows the end user to complete the receiver at their own pace and to their own specifications. Polymer80, a recognized manufacturer in the firearms industry, constructs this receiver from a proprietary glass-reinforced polymer blend that resists impact, chemical solvents, and temperature extremes. The G150 is compatible with standard AR-15 upper receivers, buffer tubes, and stock assemblies, ensuring seamless integration into a full build. The 80% designation means the receiver is not classified as a firearm under federal law until it is machined into a functional state, which is a critical distinction for builders who wish to manufacture their own firearm without serialization requirements in most jurisdictions.

Features & Specs

The Polymer80 G150 AR15 80% lower receiver only incorporates several engineering decisions that enhance both usability and longevity. The material selection alone provides significant advantages over standard aluminum receivers in weight reduction and corrosion resistance. Below are the key specifications and features of this component:

• Manufacturer: Polymer80; Category: Parts; Material: Glass-reinforced polymer composite for impact resistance and dimensional stability
• Weight: Approximately 0.5 pounds, significantly lighter than standard aluminum lower receivers, reducing overall rifle weight
• Compatibility: Accepts all standard AR-15 mil-spec parts including upper receivers, trigger groups, buffer tubes, and pistol grips

• Integrated trigger guard molded as a single unit with the receiver body for increased strength and reduced parts count
• Reinforced buffer tube tower designed to withstand repeated cycling without cracking or deformation
• Ambidextrous bolt catch recess and enlarged magazine well for improved reloading speed and tactile feedback

• Pre-drilled takedown pin holes and rear takedown lug requiring no additional machining for basic assembly
• Surface texture optimized for grip retention in wet or gloved conditions without being abrasive
• Finish: Molded-in color throughout the material, not painted, ensuring no chipping or wear over time

Who It’s For

This product is intended for experienced firearm builders and hobbyists who possess the necessary tools and knowledge to complete the final machining steps required to finish the receiver. The Polymer80 G150 AR15 80% lower receiver only is not suitable for first-time builders who lack experience with drill presses, jigs, and proper measuring techniques. It is specifically designed for individuals who wish to manufacture their own firearm for personal use in compliance with applicable federal, state, and local laws. Builders who prioritize weight savings, corrosion resistance, and cost efficiency will find this polymer receiver to be a practical alternative to aluminum options. Law enforcement officers, competitive shooters, and recreational users who value a lightweight build for extended carry or rapid target transitions will benefit from the reduced mass of this component.

Shipping & FFL

Because the Polymer80 G150 AR15 80% lower receiver only is not a firearm as defined by the Gun Control Act, it may be shipped directly to your residence or business without requiring transfer through a Federal Firearms License (FFL) holder. However, it is your responsibility to verify that possession and completion of an 80% receiver are legal in your jurisdiction. Some states and localities impose restrictions on the manufacture of unserialized firearms. By purchasing this product, you acknowledge that you are not prohibited from possessing firearms under federal law and that you will comply with all applicable laws regarding the final machining and assembly of this receiver. Shipment is made via standard ground carriers with tracking provided at the time of dispatch. No signature is required for delivery unless the carrier determines it necessary based on the shipping address or local regulations.