80 Percent Lower | 80% Lowers | Very Fast Shipping

When building a custom firearm from the ground up, the foundation of your project must meet exacting standards of material quality and dimensional accuracy. Our 80 percent lower receiver is precision-machined from billet 7075-T6 aluminum, offering the builder a robust platform that requires only basic tooling to complete. Designed for compatibility with standard AR-15 upper receiver assemblies and mil-spec lower parts kits, this component provides the structural integrity required for reliable function. We maintain rigorous quality control at every stage of production, ensuring that each blank meets the specifications demanded by serious builders.

Overview

An 80 percent lower is a partially machined firearm component that allows the end user to complete the final material removal steps necessary to produce a functional lower receiver. This product is not a firearm and may be shipped directly to your residence without an FFL transfer. Our inventory of 80% lowers is sourced from a single domestic manufacturer known for consistent tolerances and hard-coat anodized finishes. Every unit is inspected prior to shipment, and our logistics team prioritizes same-day processing to ensure very fast shipping for all orders containing this item.

Features & Specs

• Manufactured from 7075-T6 aluminum billet with a Type III Class 2 hard-coat anodized finish for corrosion resistance and dimensional stability.
• Compatible with mil-spec AR-15 lower parts kits, buffer tubes, and upper receivers; pre-drilled for standard trigger guard and bolt catch installation.
• Pocket depth and trigger slot are machined to within 0.005 inch of final specifications, reducing the need for extensive secondary work.

The lower blank includes clearly marked reference lines for the trigger slot, safety selector detent channel, and hammer pin holes. All critical locating points are indexed from the rear takedown pin lug, ensuring alignment with your jig or fixture. The fire control pocket measures 1.220 inches wide by 1.500 inches deep, accommodating standard drop-in trigger groups. Each unit is individually bagged with a desiccant pack to prevent moisture damage during storage.

Who It’s For

This component is intended for the individual who possesses the tools, knowledge, and legal capacity to complete a firearm for personal use. It is suitable for the hobbyist machinist who owns a drill press and router jig, as well as the experienced builder who requires consistent material hardness for engraving or custom finishing. The 80 percent lower is not for those seeking a completed, drop-in receiver; it demands a minimum of two to four hours of careful machining and finishing work. We recommend this product only for individuals who have previously completed at least one lower receiver and understand the legal obligations regarding serialization and transfer under federal and state law.

Shipping & FFL

Because this item is classified as an unfinished receiver blank and not a firearm, it does not require transfer through a Federal Firearms License holder. We ship this product directly to your residential or business address via UPS Ground or FedEx Home Delivery. Our fulfillment center processes orders for 80% lowers within one business hour of payment confirmation, resulting in very fast shipping that typically delivers within two to five business days depending on your location. International shipping is not available for this product. Customers are solely responsible for verifying that possession and completion of an 80 percent lower is lawful in their state, county, and municipality. Some jurisdictions restrict or prohibit the possession of unfinished receivers; by purchasing this item, you represent that you are in compliance with all applicable laws. No FFL signature is required upon delivery, though the carrier may request identification. If you choose to complete this component into a functional firearm, you must comply with all federal requirements regarding serialization and lawful transfer of the finished product.