Polymer80 LR-308 80% Lower Receiver

The Polymer80 LR-308 80% Lower Receiver represents a precision-engineered foundation for builders who demand reliability and modularity in a large-frame platform. Designed for the AR-308/DPMS pattern, this 80% lower receiver allows you to complete a firearm from a raw component, giving you full control over your build. Manufactured from high-strength polymer with reinforced stress points, it offers a lightweight yet durable alternative to aluminum receivers without compromising on structural integrity. Whether you are assembling a long-range precision rifle or a rugged field gun, this polymer80 lr-308 80% lower receiver provides the core you need to tailor your firearm to exact specifications.

Overview

Polymer80 has established a reputation for producing reliable, user-focused firearm components, and the LR-308 80% lower receiver is no exception. This uncompleted receiver requires finishing of the fire control pocket and trigger pin holes to become functional, making it an ideal project for skilled builders. It is compatible with standard AR-308/DPMS upper receivers, parts kits, and magazines, ensuring broad interoperability. The polymer80 lr-308 80% lower receiver is designed to accept the majority of drop-in triggers and grip styles, offering flexibility for both novice and experienced builders. Its black, textured finish provides a non-slip grip and resists wear in demanding conditions.

Features & Specs

This lower receiver is built with function and ease of completion in mind. The polymer80 lr-308 80% lower receiver features a reinforced front takedown pin boss and an integral trigger guard, reducing parts count and assembly complexity. The polymer material is impact-resistant and dimensionally stable, ensuring consistent performance across temperature extremes. Below are the key specifications and features:

• Manufacturer: Polymer80 | Category: Parts | Platform: AR-308/DPMS pattern
• Material: High-impact, glass-reinforced polymer with stainless steel trigger pin insert
• Finish: Textured black, corrosion-resistant; includes jig and drill bit set for completion

Additional features include a flared magazine well for rapid reloads, threaded bolt catch pin for easy installation, and a compatible rear takedown pin detent hole. The polymer80 lr-308 80% lower receiver is machined to tight tolerances, ensuring a precise fit with upper receivers and minimizing slop. It is designed to accept standard AR-308 trigger groups, hammer pins, and selector switches without modification.

Who It’s For

This component is intended for individuals who are legally permitted to manufacture a firearm for personal use under federal and state law. It is suited for builders who have the tools and knowledge to complete an 80% lower receiver, including drilling and routing the fire control pocket. The polymer80 lr-308 80% lower receiver appeals to those who want to customize their large-frame rifle for hunting, competition, or target shooting without relying on a pre-assembled lower. It is also an excellent choice for hobbyists who value hands-on craftsmanship and the ability to select every component of their build. This receiver is not for those seeking a complete firearm or those unfamiliar with the legal requirements of manufacturing a firearm at home.

Shipping & FFL

This product is classified as a non-firearm component and does not require transfer through a Federal Firearms License (FFL) holder for shipment within the United States. It can be shipped directly to your residence or business. However, it is your sole responsibility to verify that local, state, and federal laws permit the possession and completion of an 80% lower receiver. The polymer80 lr-308 80% lower receiver is intended for personal manufacture only and may not be transferred or sold as a functional firearm without proper licensing. By purchasing this product, you acknowledge that you are legally eligible to own and complete this component. We recommend reviewing the ATF guidelines and consulting with a qualified attorney if you have any questions about compliance.