Description

Premium 80% Lower Fire/Safe Marked – Billet

For builders who demand precision and reliability from the ground up, the Premium 80% Lower Fire/Safe Marked – Billet provides a solid foundation for your next custom AR-platform build. Machined from a single block of 7075-T6 aluminum, this lower receiver is designed for the serious enthusiast who values exacting tolerances and professional-grade markings. The fire/safe selector engravings are crisp, deep, and properly aligned, ensuring clear visual reference without the need for aftermarket refinishing. Whether you are completing your first build or adding to a collection, this billet 80% lower delivers the structural integrity and finish quality expected from a premium component.

Overview

The Premium 80% Lower Fire/Safe Marked – Billet is a precision-machined, unfinished lower receiver intended for DIY firearm construction. It is manufactured from billet 7075-T6 aluminum, heat-treated, and hard-coat anodized for corrosion resistance and dimensional stability. The fire/safe markings are laser-engraved before finishing, providing permanent, high-contrast legends that will not wear off. This component is compatible with standard AR-15 mil-spec upper receivers, parts kits, and buffer tube assemblies, making it a straightforward platform for custom builds or replacement projects. As an 80% lower, it requires final machining of the fire control pocket and associated holes to become a functional receiver.

Features & Specs

• Material: 7075-T6 billet aluminum, heat-treated to T6 condition for maximum strength-to-weight ratio
• Finish: Type III hard-coat anodized per MIL-A-8625, matte black for low-glare and abrasion resistance
• Markings: Permanent laser-engraved “Fire” and “Safe” selector legends on both sides of the receiver; serial number area left blank
• Compatibility: Accepts all standard AR-15 lower parts kits, pistol grips, stocks, and buffer tubes
• Weight: approximately 11.5 ounces as unfinished, machinable to standard dimensions

Each Premium 80% Lower Fire/Safe Marked – Billet is inspected for critical dimensions including trigger pin hole alignment, magazine well width, and rear takedown pin pocket depth. The billet construction eliminates casting porosity and produces a receiver with tighter tolerances than many forged units. The fire/safe markings are positioned at the correct 90-degree throw arc, ensuring unambiguous selector position identification after assembly.

Who It’s For

This product is intended for individuals who possess the tooling, skill, and legal right to complete an unfinished lower receiver. It is ideal for hobbyists who want to build a custom rifle with specific trigger groups, ambidextrous controls, or specialized finishes. The Premium 80% Lower Fire/Safe Marked – Billet is also well suited for gunsmiths or small shops that require a consistent, high-quality billet blank for client builds. Because the fire/safe markings are pre-applied, the builder saves time on engraving while still having the flexibility to personalize the receiver with additional marking later. This part is not for beginners lacking proper jigs, end mills, or drill presses; it assumes the builder understands receiver finishing and all applicable laws.

Shipping & FFL

This item is classified as an unfinished receiver and is NOT a firearm under federal law. It may be shipped directly to your residence or business without an FFL transfer. However, you must comply with all applicable local, state, and federal regulations regarding the purchase and completion of 80% lowers. Some states and municipalities impose restrictions on unfinished receivers, including serialization requirements or outright bans. It is your responsibility to verify legality in your jurisdiction before ordering. By purchasing this Premium 80% Lower Fire/Safe Marked – Billet, you confirm that you are legally eligible to possess and complete a firearm receiver. No returns or exchanges on machined components.