About this product

Polymer80 AR15 80% Receiver w/ Jig Kit

For builders seeking a reliable foundation for a custom AR-15 platform, the Polymer80 AR15 80% Receiver w/ Jig Kit delivers a complete, ready-to-finish solution. This kit combines a precision-molded 80% lower receiver with the necessary jig and tooling, allowing you to complete your build with confidence. As a top-tier option in the build kits category, this product from Polymer80 is engineered for those who demand control over their firearm’s assembly without compromising on structural integrity.

Overview

The Polymer80 AR15 80% Receiver w/ Jig Kit is designed for hobbyists and serious builders who prefer to complete a firearm from an unfinished receiver. The 80% lower is constructed from reinforced polymer, offering a lightweight yet durable platform that withstands standard use. The included jig kit simplifies the milling and drilling process, ensuring accurate cuts for trigger groups and fire control components. This kit is a direct solution for anyone looking to assemble a compliant, non-serialized receiver in their own workshop.

Features & Specs

This kit from Polymer80 incorporates advanced design elements to facilitate a straightforward build process. The receiver geometry matches mil-spec dimensions for compatibility with most AR-15 upper receivers and parts. The jig is CNC-machined from high-grade aluminum, providing repeatable alignment for the required machining steps. Below are the key specifications and features:

• Manufacturer: Polymer80, Category: Build Kits. The receiver is made from impact-resistant polymer with a reinforced buffer tower for added strength.
• Includes a complete jig kit with drill bits, end mill, and alignment pins. No additional tooling is required beyond a standard drill press or hand drill.
• Compatible with standard AR-15 lower parts kits, buffer tubes, and buttstocks. The receiver accepts mil-spec triggers and grip modules without modification.

The polymer80 ar15 80% receiver w/ jig kit is shipped with all necessary components to begin your build immediately. The jig features indexed reference marks for precise pocket machining, reducing the risk of errors.

Who It’s For

This kit is intended for experienced firearm enthusiasts and DIY builders who understand the legal and mechanical requirements of completing an 80% receiver. It is ideal for individuals who want to customize their AR-15 platform from the ground up, selecting their own trigger, stock, and upper components. The polymer80 ar15 80% receiver w/ jig kit is not for first-time builders; it requires basic mechanical skills, patience, and adherence to all applicable laws. If you are comfortable with hand tools and have a designated workspace, this kit provides the foundation for a reliable, personalized firearm. Always verify your local regulations before purchasing or completing an 80% receiver.

Shipping & FFL

This product ships directly to your residence or business address within the United States. No Federal Firearms License (FFL) transfer is required because the receiver is classified as an unfinished, non-firearm item under federal law. However, you must be at least 18 years of age to purchase this kit. Upon completion, the receiver becomes a firearm and must comply with all federal, state, and local regulations. It is your responsibility to ensure that finishing this receiver does not violate any laws in your jurisdiction. We recommend consulting with legal counsel or your local law enforcement agency before beginning your build. The polymer80 ar15 80% receiver w/ jig kit is sold as a machining project, not as a finished firearm.