80 Percent Lower | 80% Lowers | Very Fast Shipping

For the serious builder seeking maximum control over their next platform, the 80 Percent Lower delivers precision engineering at the foundational level. Manufactured to strict tolerances from billet 7075-T6 aluminum, this component is designed for the end-user who demands a professional-grade starting point. Every unit is inspected for dimensional accuracy before packaging, ensuring that your finishing process proceeds without unnecessary complications. When you need an 80 percent lower that arrives quickly and performs reliably, this is the component that meets the standards of experienced gunsmiths and first-time builders alike.

Overview

This 80 Percent Lower is a partially machined receiver blank that requires final milling to complete the fire control cavity and trigger channel. It is manufactured from solid billet 7075-T6 aluminum, a material chosen for its superior strength-to-weight ratio and corrosion resistance. The forging is heat-treated to MIL-SPEC standards and then hard-coat anodized in a matte black finish for durability. As a true 80% lower, it is not a firearm and can be shipped directly to your residence or business without an FFL dealer transfer. The jig and tooling required for completion are sold separately.

• Material: Billet 7075-T6 aluminum, hard-coat anodized per MIL-A-8625F Type III Class 2
• Compatibility: Mil-Spec upper receivers, buffer tubes, and lower parts kits
• Weight: 10.2 ounces (unfinished)

Features & Specs

The 80 Percent Lower is engineered with precision-machined locating pockets and reference surfaces that guide your jig during the finishing process. Every critical dimension is held to +/- 0.005 inches, including the trigger pin holes and hammer pin axis. The rear takedown pin lug is reinforced for additional durability under repeated use. The magazine well is fully machined and polished, accepting standard AR-15 magazines without binding. The bolt catch channel is pre-machined to depth, and the safety selector detent channel is drilled and tapped. This 80 percent lower is designed for use with a standard jig and end mill setup, requiring no specialized fixtures beyond the recommended tooling.

• Precision machined trigger pocket reference surfaces for accurate jig alignment
• Reinforced rear takedown pin boss for enhanced service life
• Complete magazine well with polished feed ramp geometry

Who It’s For

This 80% lower is intended for individuals who possess the mechanical aptitude and proper tooling to complete the receiver in their home workshop. It is ideal for the experienced builder who wishes to customize their trigger group, select a unique anodizing color, or simply enjoy the process of finishing their own firearm component. The product is also suitable for small-scale custom shops that require consistent, high-quality blanks for client builds. If you are new to finishing 80 percent lowers, ensure you have reviewed the necessary jig instructions and safety procedures before beginning work. This component is not a completed firearm and requires machining to function.

Shipping & FFL

Because this is an 80 Percent Lower and not a finished firearm, it is not subject to the same transfer regulations as a completed receiver. We ship this item directly to your shipping address via USPS Priority Mail or UPS Ground, with a typical delivery window of 2 to 4 business days. Very fast shipping is standard on all in-stock 80% lowers. No FFL dealer signature is required upon delivery. However, you must be 18 years of age or older to purchase this component. Local, state, and federal laws regarding the manufacture of firearms for personal use vary. It is your sole responsibility to verify that the possession and finishing of an 80% lower is legal in your jurisdiction before placing an order. We do not provide legal advice regarding the assembly or registration of privately manufactured firearms.

• Ships directly to your home or business address
• No FFL transfer fee required
• Must comply with all applicable local, state, and federal laws