Premium 80% Lower Fire/Safe Marked – Billet

When precision and compliance define your build, the premium 80% lower fire/safe marked – billet delivers the exacting standards you demand. Machined from solid 7075-T6 aluminum billet, this lower receiver is designed for the serious builder who values both function and finish. The fire/safe markings are laser-etched and deeply engraved, ensuring long-term legibility without interfering with your coating or cerakote process. Every dimension is held to mil-spec tolerances, providing a seamless interface with your upper and LPK. For the builder who refuses to compromise, this is the foundation.

Overview

The premium 80% lower fire/safe marked – billet is a semi-finished receiver that requires final machining of the fire control pocket and trigger pin holes. Unlike forged lowers, this billet unit is cut from a single block of aluminum, offering superior grain structure and material integrity. The fire/safe markings are positioned at the standard selector location, eliminating the need for aftermarket jigs or stencils. Each unit is individually inspected for surface finish, pocket depth, and overall dimensions before leaving the facility.

Features & Specs

• Manufacturer: Premium
• Category: Parts
• Material: 7075-T6 aluminum billet, hard coat anodized to MIL-A-8625F Type III Class 2
• Markings: Laser-etched “FIRE” and “SAFE” on both sides; selector pictogram included
• Compatibility: Accepts standard AR-15 lower parts kits, buffer tubes, and pistol grips
• Finish: Matte black, uniform appearance ready for immediate finishing

• Tolerance: Pocket dimensions held to +/- 0.002 inch for consistent trigger group fit
• Weight: 11.5 ounces (unfinished), reducing overall build weight without sacrificing strength
• Threading: Accepts standard 1/2-28 barrel nuts and 4-40 grip screws
• Warranty: Lifetime against manufacturing defects

• No jig required for fire/safe markings; pre-positioned for correct selector indexing
• Compatible with all standard AR-15 caliber configurations (5.56, .300 BLK, 9mm with appropriate mag block)
• Includes trigger guard machined as part of the lower for added rigidity

Who It’s For

This premium 80% lower fire/safe marked – billet is built for the experienced DIY builder who wants a head start on the finishing process. It is ideal for those who already own a drill press or CNC setup and prefer a lower that arrives with critical markings already in place. Gunsmiths, custom builders, and serious enthusiasts will appreciate the billet construction, which eliminates the variability of forged receivers. If you are building a match-grade rifle or a precision pistol-caliber carbine, this lower provides the stiffness and consistency required for tight groups. It is also suitable for collectors who want a clean, marked lower for display or future build projects.

Shipping & FFL

This product is classified as a non-firearm item under federal guidelines because it is not yet a functional receiver. It may be shipped directly to your doorstep without an FFL transfer. However, it is your responsibility to verify state and local laws before ordering. Some states and municipalities impose restrictions on 80% lowers, including age limits, serialization requirements, or outright bans. We recommend consulting with your local law enforcement or a firearms attorney if you are uncertain about compliance. Once you complete the machining, the resulting firearm must comply with all applicable federal, state, and local laws. We do not provide legal advice, and this description does not constitute a guarantee of legality in your jurisdiction. Shipment is via UPS Ground or FedEx Home Delivery, with signature required for all orders over $500. No international shipping. Expedited options are available at checkout.