Premium Fire/Safe Marked Billet 80% Lower Assembly

When building a custom AR-platform firearm, the foundation matters. The Premium Fire/Safe Marked Billet 80% Lower Assembly delivers a precision-machined starting point for your build, manufactured from solid 7075-T6 aluminum billet. This assembly comes pre-marked with safe and fire selector engravings, eliminating the need for post-machining markings. Designed for the serious builder, this lower offers exacting tolerances and a clean, professional aesthetic without superfluous branding.

Overview

The Premium Fire/Safe Marked Billet 80% Lower Assembly is an unfinished lower receiver that requires final machining of the fire control pocket, trigger pin holes, and selector detent channel before full assembly. Manufactured by Premium, this component is categorized as a firearm part and is not a finished firearm. It is compatible with standard AR-15 mil-spec upper receivers, buffer tubes, and lower parts kits. The pre-engraved safe and fire markings align with industry-standard stencil placement, ensuring a clean look after your build is complete.

Features & Specs

• Constructed from 7075-T6 aluminum billet for high strength-to-weight ratio and corrosion resistance
• Pre-engraved “SAFE” and “FIRE” markings on the selector side, requiring no additional engraving after completion
• Precision CNC-machined from a solid billet block with tight tolerances on the trigger pocket and takedown pin holes
• Hard coat anodized finish in black for durability and wear protection
• Accepts standard AR-15 lower parts kits, grips, and buffer tube assemblies

Who It’s For

This premium fire/safe marked billet 80% lower assembly is intended for experienced builders who own the necessary jigs, tooling, and CNC or drill press equipment to complete the fire control pocket and pin holes. It suits those who prefer a billet lower over forged options due to its thicker wall sections and sharper aesthetic lines. If you require a lower that arrives with clear, factory-style safety markings and want to avoid laser engraving after machining, this assembly is a direct fit for your project. This product is not recommended for first-time builders unfamiliar with 80% lower completion procedures.

Shipping & FFL

This Premium Fire/Safe Marked Billet 80% Lower Assembly is classified as an unfinished receiver and may be shipped directly to your residence in most states. However, federal, state, and local laws vary. Before ordering, verify that possession and completion of 80% lowers are legal in your jurisdiction. Some states require serialization and background checks upon completion. We recommend consulting with a licensed FFL holder or legal professional if you have questions about compliance. By purchasing this product, you confirm that you are not prohibited from owning firearms and that you will complete the lower in accordance with all applicable laws. We reserve the right to refuse or cancel orders that appear to violate regulations.