Polymer80 AR15 80% Receiver w/ Jig Kit

If you are looking to take full control of your next build, the Polymer80 AR15 80% Receiver w/ Jig Kit is the starting point that puts the work back in your hands. This isn’t a finished lower—it is an 80% receiver that requires you to complete the final machining steps yourself. Polymer80 has designed this kit to simplify the process while maintaining the structural integrity you need for a reliable rifle. Whether you are a first-time builder or a seasoned hobbyist, this kit gives you the freedom to assemble a firearm that is truly your own.

Overview

The polymer80 ar15 80% receiver w/ jig kit is engineered for those who want to build from the ground up. The receiver is made from a high-strength polymer composite that resists impact and environmental stress. Included in the kit is the proprietary jig system, which guides your drill and router to ensure precise pocket cuts and pin holes. The jig is reusable, so if you plan on building multiple receivers, you will get value out of this kit beyond a single project. This is a straightforward way to learn the inner workings of the AR platform without needing a full machine shop.

Features & Specs

Polymer80 has refined their manufacturing process to deliver a receiver that is both lightweight and durable. The kit includes everything you need to complete the lower receiver, minus the final parts kit. Here are the key details:

• Manufacturer: Polymer80. Category: Build Kits. The receiver is an 80% blank, meaning the fire control group pocket and trigger pin holes are not pre-machined.
• Material: Impact-resistant polymer composite with reinforced stress points around the buffer tube and trigger area.
• Jig system: Includes a multi-piece drilling and routing jig with stainless steel drill bushings and hardened steel guide pins for repeatable accuracy.
• Compatibility: Designed to accept standard AR15 lower parts kits and buffer tube assemblies. Works with most mil-spec uppers.
• Finish: Textured grip surface with an ergonomic magazine release area and an integrated trigger guard.

When you purchase the polymer80 ar15 80% receiver w/ jig kit, you are getting a purpose-built setup that reduces guesswork. The jig clamps directly to the receiver and provides clear indexing points, so even if you are using a handheld drill, you can achieve consistent results.

Who It’s For

This kit is designed for the hands-on builder who values the process as much as the finished product. It is ideal for anyone who wants to understand how the AR15 platform functions at a component level. Because this is an 80% receiver, it is not a finished firearm and requires you to complete the machining steps yourself. This makes it a practical choice for hobbyists, gunsmiths in training, or anyone who prefers to build rather than buy off the shelf. The polymer80 ar15 80% receiver w/ jig kit is also a solid option for those who want to experiment with different trigger groups or custom finishes without committing to a fully assembled lower.

If you have basic mechanical skills and a drill press or a steady hand with a handheld drill, you can complete this receiver in an afternoon. The included jig eliminates most of the potential for error, so you can focus on the build itself.

Shipping & FFL

Because this product is an 80% receiver, it is not classified as a firearm by the ATF. It does not require transfer through a Federal Firearms License (FFL) holder. We can ship this polymer80 ar15 80% receiver w/ jig kit directly to your doorstep. However, please check your state and local laws before ordering. Some states and municipalities have specific restrictions on 80% receivers, unserialized frames, or home-built firearms. It is your responsibility to ensure compliance with all applicable laws. We do not provide legal advice, and we cannot accept returns on receivers that have been drilled or modified. By purchasing, you confirm that you are legally eligible to possess this component and that you will complete the build in accordance with local regulations.