Polymer80 G150 AR15 80% Lower Receiver Only

When building a custom AR15 platform, the foundation matters. The Polymer80 G150 AR15 80% lower receiver only offers a cost-effective, durable starting point for the serious DIY firearm builder. Designed for those who understand the machining process, this uncompleted lower receiver gives you full control over your build while meeting the standards of a trusted manufacturer in the industry. At a competitive price point, this unit provides the structural integrity and compatibility needed for a reliable AR15 platform.

Overview

The Polymer80 G150 AR15 80% lower receiver only is a precision-machined polymer component that requires final milling to complete. It is designed to accept standard AR15 upper receivers, trigger groups, and buffer tube assemblies, making it a versatile choice for custom builds. Unlike fully finished receivers, this 80% variant allows the builder to legally manufacture their own firearm without serialization requirements in most jurisdictions. The G150 model specifically balances weight reduction with structural rigidity, using high-impact polymer reinforced with fiberglass for long-term durability.

Features & Specs

Every aspect of this lower receiver is engineered for performance and ease of completion. Below are the key attributes that set this Polymer80 G150 AR15 80% lower receiver only apart from standard polymer lowers.

• Manufacturer: Polymer80 – a leading name in the 80% receiver market known for rigorous quality control.
• Material: High-impact, fiberglass-reinforced polymer that resists cracking and warping under recoil.
• Compatibility: Accepts all mil-spec AR15 upper receivers, lower parts kits, and buffer tube assemblies without modification.
• Design: Integrated trigger guard and reinforced buffer tower for increased strength at critical stress points.
• Weight: Approximately 30% lighter than standard aluminum lowers, reducing overall rifle weight without sacrificing reliability.

Who It’s For

This product is intended for experienced firearm builders and hobbyists who have the tools and skills to complete a lower receiver. If you are comfortable with drilling, milling, and finishing the fire control pocket, the Polymer80 G150 AR15 80% lower receiver only is an excellent project. It is not for first-time builders or those unfamiliar with the legal requirements of manufacturing firearms. This receiver is ideal for those seeking a lightweight, affordable base for a personalized AR15, whether for range use, competition, or general sport shooting. Always verify local and state laws before purchasing an 80% lower receiver.

• Ideal for intermediate to advanced DIY builders with access to a drill press or router jig.
• Suitable for shooters who prioritize weight savings and customization over factory-assembled rifles.
• Recommended for builders who want to avoid the cost of a fully serialized lower while maintaining quality.

Shipping & FFL

Because this is an 80% lower receiver that is not yet a firearm under federal law, it ships directly to your doorstep without the need for an FFL transfer. No background check is required for purchase. However, once completed, the receiver becomes a firearm, and you must comply with all applicable federal, state, and local laws regarding possession and use. Some states and localities restrict or prohibit the manufacture of unserialized firearms. It is your sole responsibility to ensure that completing this Polymer80 G150 AR15 80% lower receiver only is legal in your area. We recommend consulting with a legal professional if you have any doubts. By purchasing this product, you acknowledge that you are legally allowed to own and manufacture a firearm, and that you will not transfer the completed receiver without complying with all applicable laws.

• Ships directly to your address; no FFL transfer required for the 80% receiver.
• Must be 18 years or older to purchase; age restrictions may vary by state.
• California, New York, New Jersey, Connecticut, and certain other jurisdictions may have additional restrictions. Check your local laws before ordering.