P80 G150 AR-15 80% Receiver Kit – Gray

The P80 G150 AR-15 80% Receiver Kit – Gray represents a precision-engineered foundation for builders seeking a custom AR-15 platform. Manufactured by Polymer80, this kit provides the critical components necessary to complete a lower receiver while adhering to all applicable federal regulations regarding unfinished receivers. The gray color variant offers a distinct aesthetic that pairs well with both black and FDE upper assemblies, making it a versatile choice for any build configuration.

Overview

This kit is centered around the P80 G150 80% lower receiver, which requires final machining of the fire control pocket and trigger pin holes to become a functional receiver. The polymer construction utilizes a high-impact, glass-reinforced nylon blend that resists flexing and maintains dimensional stability during the finishing process. The gray finish is applied during molding, providing consistent coloration throughout the material rather than a surface coating that could wear over time. All necessary jigs and tooling guides are included to assist with the machining process, though end users must complete the work themselves to comply with federal law.

Features & Specs

• 80% lower receiver machined from proprietary Polymer80 glass-reinforced polymer; requires drilling of trigger pin and hammer pin holes plus trigger pocket milling; compatible with standard AR-15 mil-spec upper receivers and lower parts kits
• Kit includes: P80 G150 80% lower receiver in gray, drill bits, end mill, jig system with alignment pins, and step-by-step instruction manual; no firearm parts are included as this is an unfinished receiver
• Manufacturer specifications: Polymer80 category Build Kits; receiver weight approximately 8.5 ounces; accepts all standard AR-15 buffer tubes, pistol grips, and buttstocks; uses standard AR-15 takedown pins and bolt catch components

The P80 G150 AR-15 80% Receiver Kit – Gray ships with the jig system pre-assembled for immediate use. The jig body is constructed from impact-modified polymer that resists cracking during drilling operations. All drill bits are carbide-tipped for clean hole formation through the polymer substrate. The end mill is double-fluted to prevent binding during the trigger pocket operation.

Who It’s For

This kit is designed for experienced builders who possess the necessary tools and skills to complete an 80% receiver. It is not suitable for first-time builders without prior machining experience or access to a drill press and rotary tool. The P80 G150 AR-15 80% Receiver Kit – Gray appeals to three primary user groups: hobbyists who enjoy the technical challenge of receiver completion, individuals who want a custom firearm with personalized trigger and grip choices, and shooters who prefer polymer lower receivers for their weight savings over aluminum alternatives. The gray finish specifically suits those building a two-tone rifle or replicating a specific camouflage pattern.

Shipping & FFL

Because the P80 G150 AR-15 80% Receiver Kit – Gray is an unfinished receiver that is not yet a firearm under federal law, it ships directly to your residence or business address without requiring transfer through a Federal Firearms License holder. No background check is required at the time of purchase. However, once you complete the receiver by machining the fire control pocket and installing a trigger group, the finished product becomes a firearm under the Gun Control Act. At that point, you may not transfer or sell the completed receiver to another individual without engaging a licensed FFL dealer to perform the transfer. All sales are final; returns are only accepted for unopened, unused kits. Check your state and local laws before purchasing, as some jurisdictions restrict or prohibit the possession of unfinished receivers. By completing this kit, you certify that you are not prohibited from possessing firearms under federal or state law.