Polymer80 G150 AR15 80% Lower Receiver Only

The Polymer80 G150 AR15 80% Lower Receiver Only represents a precision-engineered platform for the independent builder seeking a durable, specification-accurate foundation for their custom AR-15 build. Manufactured by Polymer80, a recognized industry leader in polymer firearm components, this un-machined lower receiver offers the structural integrity and dimensional consistency required for a reliable, long-service-life weapon system. Designed specifically for the AR-15 platform, the G150 80% lower receiver only is the critical starting point for any build where the builder intends to complete the machining process themselves.

Overview

The Polymer80 G150 AR15 80% Lower Receiver Only is a semi-finished component that requires end-user machining to complete the fire control cavity and trigger pin holes. Constructed from high-impact, glass-reinforced polymer, this 80% lower receiver only provides a lightweight yet robust chassis that meets or exceeds mil-spec dimensions for compatibility with standard AR-15 upper receivers, lower parts kits, and buffer tube assemblies. As a non-firearm component, it allows the builder to legally create a serialized firearm under federal guidelines when properly completed and engraved.

Features & Specs

• Manufacturer: Polymer80; Category: Parts; Platform: AR-15; Material: Glass-reinforced polymer
• Mil-spec compatible trigger pin and hammer pin pocket locations; pre-drilled rear takedown pin and safety selector pockets
• Integrated flared magazine well for faster reloads; reinforced front and rear pivot pin lugs to reduce wear
• Accepts standard AR-15 lower parts kits, pistol grips, and collapsible or fixed stocks without modification
• Weight: approximately 8.2 ounces; overall length matches standard mil-spec lower receiver dimensions

This Polymer80 G150 AR15 80% Lower Receiver Only is manufactured with a textured grip surface and an oversized trigger guard that accommodates gloved hands. The polymer formulation provides impact resistance while maintaining the rigidity necessary for consistent lock-up with the upper receiver. All critical dimensions are held to within 0.005 inches of mil-spec tolerances, ensuring reliable component fitment.

Who It’s For

This product is intended for the experienced hobbyist, gunsmith, or firearms enthusiast who possesses the technical skill, tooling, and knowledge required to complete an 80% lower receiver. The Polymer80 G150 AR15 80% Lower Receiver Only is appropriate for builders who prefer to execute their own fire control cavity machining, understand proper jig alignment, and accept full responsibility for the final fit and function of the completed receiver. It is not recommended for first-time builders without prior experience using a router, drill press, or dedicated 80% lower jig system. This component is designed for personal use only and is not intended for commercial resale as a finished firearm without proper licensing.

Shipping & FFL

Because the Polymer80 G150 AR15 80% Lower Receiver Only is classified as an unfinished, non-firearm component (80% receiver), it does not require transfer through a Federal Firearms License (FFL) holder for shipment to most states. However, purchasers must comply with all applicable federal, state, and local laws regarding the possession, machining, and serialization of firearm components. Some states and municipalities impose restrictions on 80% receivers, including serialization requirements or outright bans. It is the sole responsibility of the buyer to verify legality in their jurisdiction before ordering. This product ships directly to your doorstep, and no FFL transfer is required unless mandated by your specific state or local regulations.