Premium 80% Lower Fire/Safe Marked – Billet

Build your next custom AR-15 platform with a component designed for precision and reliability. The Premium 80% Lower Fire/Safe Marked – Billet offers the clean, unmarked foundation that serious builders demand, combined with clearly engraved fire control markings for a professional finish. Machined from solid 7075-T6 aluminum billet, this lower receiver blank delivers the material integrity and dimensional accuracy required for a dependable build. Whether you are completing your first project or adding to a collection, this premium 80% lower fire/safe marked – billet provides the ideal starting point for a firearm that meets your exact specifications.

Overview

The Premium 80% Lower Fire/Safe Marked – Billet is exactly what the name implies: a billet-machined, uncompleted lower receiver that requires final machining of the fire control cavity before assembly. It comes pre-marked with “FIRE” and “SAFE” selector engravings, eliminating the guesswork for your finished build. This blank is manufactured using precision CNC machining from a solid billet of 7075-T6 aluminum, then hard-coat anodized in a MIL-SPEC Type III Class 2 finish for corrosion resistance and durability. As an 80% receiver, it is not considered a firearm by the ATF and can be shipped directly to your door without an FFL transfer. The Premium 80% lower fire/safe marked – billet is fully compatible with standard AR-15 mil-spec parts kits and upper receivers, allowing you to complete a custom firearm tailored to your preferences.

Features & Specs

• Machined from a solid billet of 7075-T6 aluminum, providing superior strength and dimensional stability compared to forged receivers. Hard-coat anodized in MIL-SPEC Type III Class 2 black for maximum wear resistance and corrosion protection.
• Pre-engraved “FIRE” and “SAFE” markings on the selector positions, laser-etched for crisp, permanent legibility. Does not require additional engraving to meet compliance for completed builds when properly machined.
• Accepts all standard AR-15 lower parts kits, pistol grips, buffer tubes, and upper receivers. Features a flared magazine well for easier reloads and an integrated trigger guard for a clean, streamlined profile.

This premium 80% lower fire/safe marked – billet is manufactured with tight tolerances that ensure a proper fit with your chosen components. The billet construction process allows for more intricate machining and sharper corners than forging, resulting in a receiver that looks as good as it performs. Each unit is individually inspected for material flaws, machining accuracy, and anodizing consistency before packaging.

Who It’s For

This product is intended for the experienced home builder who values precision and wants a finished product that looks professional. If you have the tools and knowledge to complete the fire control pocket, trigger slot, and selector detent hole, the Premium 80% Lower Fire/Safe Marked – Billet is the right choice for your build. It is also ideal for the gunsmith or small shop looking to offer clients a high-quality lower receiver that requires final machining. Because it ships as an 80% receiver, it is an excellent option for those in jurisdictions where regulated firearm transfers are restricted, but DIY firearm construction remains legal. This premium 80% lower fire/safe marked – billet is not recommended for first-time builders without prior experience with a jig and router or drill press, as proper machining is essential for safety and reliability.

Shipping & FFL

This item is classified as an 80% lower receiver and is not a firearm under federal law. It ships directly to your residential or business address with no FFL transfer required. No background check is necessary for purchase. You must be at least 18 years old to order. Some states and localities have laws restricting the purchase or possession of 80% receivers or unfinished frames. It is your responsibility to verify that ownership and completion of this product are legal in your jurisdiction. By purchasing this Premium 80% Lower Fire/Safe Marked – Billet, you acknowledge that you will comply with all applicable federal, state, and local laws. Do not attempt to complete this receiver if you do not have the proper tools, jigs, and technical knowledge. An improperly machined lower receiver can create an unsafe firearm.