About this product

Polymer80 G150 AR15 80% Lower Receiver Only

The Polymer80 G150 AR15 80% Lower Receiver Only represents a foundational component for builders who demand precision and reliability in their firearm projects. Machined from reinforced polymer with a dedicated jig interface, this receiver is engineered to meet the specifications of the AR15 platform while offering the flexibility of a DIY build. As an 80% lower, it requires final machining to become a functional firearm, allowing you to complete the receiver under your own direction. This is a bare receiver, sold as a component; no jig or completion kit is included.

Overview

The Polymer80 G150 AR15 80% Lower Receiver Only is a semi-finished lower receiver designed for the AR15 platform. It is constructed from high-impact polymer and features integrated trigger guard geometry. This receiver is intended for builders who want to machine the fire control pocket and trigger pin holes to their own specifications. The G150 accepts standard AR15 lower parts kits and buffer tube assemblies, making it a direct drop-in component after completion. It ships as a raw, unmachined 80% lower, requiring the end user to perform the necessary drilling and milling operations.

Features & Specs

• Material: Reinforced polymer composite with molded trigger guard for durability and weight reduction.
• Compatibility: Accepts standard AR15 mil-spec lower parts kits, buffer tubes, and pistol grips.
• Machining Required: Unfinished fire control pocket; requires drilling of trigger and hammer pin holes. No jig or bits included.
• Finish: Matte black texture, ready for final machining. No coating or anodizing applied.

The polymer80 g150 ar15 80% lower receiver only is built to interface with common AR15 upper receivers and bolt carrier groups. The polymer formulation provides impact resistance while keeping the overall weight low. Each receiver is cast and machined to consistent tolerances, ensuring a proper fit with standard components once the machining process is complete.

Who It’s For

This product is for experienced firearm builders who understand the legal and mechanical requirements of completing an 80% lower receiver. It is intended for individuals who possess the tools and knowledge to safely machine the fire control pocket, drill pin holes, and assemble the lower receiver. The polymer80 g150 ar15 80% lower receiver only is not for first-time builders or those without access to a drill press, end mill, or router. It is suitable for hobbyists, gunsmiths, and enthusiasts who want a polymer-based alternative to aluminum receivers for lightweight builds or custom projects.

• Experienced DIY builders with prior 80% lower experience.
• Gunsmiths seeking a polymer option for customer builds.
• Enthusiasts building lightweight or polymer-centric AR15 platforms.

Shipping & FFL

This item is classified as an 80% lower receiver and is not considered a firearm by the ATF. It can be shipped directly to your residence without an FFL transfer. No background check is required for purchase. However, once you complete the machining process and assemble a functional firearm, federal and state laws apply. You are responsible for complying with all local, state, and federal regulations regarding the manufacture and ownership of firearms. Check your state laws before ordering. This product is sold as a raw component only; no liability is assumed for its use or misuse. The polymer80 g150 ar15 80% lower receiver only must not be shipped to states or localities where 80% receivers are restricted or prohibited by law.

• Ships directly to your door; no FFL required for this unfinished component.
• Buyer assumes all responsibility for legal compliance during and after completion.
• Not eligible for return or exchange after removal from packaging due to safety and regulatory requirements.