Premium 80% Lower Fire/Safe Marked – Billet

The premium 80% lower fire/safe marked – billet is a purpose-built component for builders who demand precision and durability in their custom firearm projects. Machined from 7075-T6 aluminum billet, this lower receiver blank offers the structural integrity required for high-use builds while remaining compatible with standard AR-15 mil-spec parts. The integrated fire/safe markings are laser-etched before anodizing, ensuring legibility through the entire finishing process. For builders seeking a reliable foundation that balances material quality with straightforward machining, this premium 80% lower fire/safe marked – billet represents a considered choice in the parts category.

Overview

As a Category: Parts product from manufacturer Premium, this 80% lower receiver blank arrives in an unfinished state, requiring end-user machining to complete the fire control pocket and trigger pin holes. The billet construction allows for tighter tolerances than forged alternatives, with the fire/safe markings pre-applied to eliminate one step from your build process. This premium 80% lower fire/safe marked – billet is designed for builders who want a clean, professional appearance without sacrificing the ability to customize the final finish. The 7075-T6 aluminum provides a high strength-to-weight ratio, making it suitable for both range-use rifles and dedicated competition platforms.

Features & Specs

The technical specifications of this premium 80% lower fire/safe marked – billet reflect a focus on precision manufacturing. Each unit is milled from a solid billet of 7075-T6 aluminum, then Type III hard coat anodized for corrosion resistance and surface hardness. The fire/safe selector markings are engraved prior to anodizing, creating a permanent mark that will not wear off with handling or solvent exposure.

• 7075-T6 aluminum billet construction with +/- 0.001 inch tolerance on critical dimensions
• Pre-marked fire/safe selector indicators laser-etched and anodized for permanence
• Mil-spec trigger pocket dimensions requiring final machining to 1.250 inch depth
• Compatible with all standard AR-15 lower parts kits and buffer tube assemblies
• Raw weight of 9.2 ounces before machining, reducing to approximately 8.5 ounces after completion

This premium 80% lower fire/safe marked – billet includes no jig or tooling. Builders should plan to supply their own 80% lower jig, end mill bits, and drill guides specific to this receiver geometry. The billet design offers a slightly wider magazine well opening compared to forged lowers, which can improve reload speed during competition use.

Who It’s For

This premium 80% lower fire/safe marked – billet is intended for experienced builders who have access to a drill press or router-based jig system. It is particularly suited for those who value the tighter tolerances of billet machining over forged receivers, and who prefer the convenience of pre-applied fire/safe markings versus hand-engraving or stenciling. The product is appropriate for:

• Builders constructing a single AR-15 and wanting a billet receiver without waiting for custom engraving
• Competition shooters who require consistent magazine fit and trigger component alignment
• Hobbyists who want the durability of 7075-T6 aluminum in a non-forged format
• Those creating a “designer” build where the billet aesthetic and clean lines are a priority

This premium 80% lower fire/safe marked – billet is not recommended for first-time builders or those without access to proper machining equipment. The billet material is harder than forged 6061, requiring sharp tooling and steady feed rates to avoid chatter during the fire control pocket cut.

Shipping & FFL

This premium 80% lower fire/safe marked – billet is classified as a non-firearm component under current federal regulations and ships directly to your home or business address with no Federal Firearms License (FFL) transfer required. Standard shipping applies, with tracking provided upon fulfillment. Local, state, and municipal laws vary regarding 80% lower receivers. It is the buyer’s sole responsibility to verify that possession and completion of this product is legal in their jurisdiction. No firearm manufacturing services are provided by this retailer. The buyer assumes all liability for lawful completion and compliance with applicable laws.