Description

Premium 80% Lower Fire/Safe Marked – Billet

For builders who demand precision from the ground up, the Premium 80% Lower Fire/Safe Marked – Billet is a machined platform engineered for exacting standards. This billet 80% lower receiver is designed to serve as the foundation for a custom AR-15 build, offering the durability of 7075-T6 aluminum with clean, permanent fire/safe markings that eliminate guesswork during assembly. Each unit is crafted to strict dimensional tolerances, ensuring compatibility with mil-spec upper receivers and parts kits while providing the structural integrity required for reliable long-term service.

Overview

The Premium 80% Lower Fire/Safe Marked – Billet is a partially machined receiver requiring final milling to complete. It is constructed from solid billet 7075-T6 aluminum, offering superior strength and corrosion resistance compared to forged alternatives. The receiver features laser-engraved fire/safe selector markings, providing clear visual reference for your finished build. As an 80% lower, it allows the builder to complete the fire control pocket and trigger pin holes, offering flexibility for custom modifications while remaining compliant with federal firearm regulations prior to final machining.

Features & Specs

• Material: 7075-T6 billet aluminum, hard coat anodized per MIL-A-8625 Type III class 2 for wear resistance and durability.
• Markings: Permanent laser-engraved “FIRE” and “SAFE” indicators on both sides of the receiver, aligned with mil-spec selector geometry.
• Machining: Fully squared trigger guard, threaded buffer tube pocket (1/2″-28), and oversized flared magazine well for easier reloads.
• Tolerances: Critical pin hole locations are pre-drilled to within +/- 0.001 inch for consistent trigger and hammer alignment.
• Compatibility: Designed to accept standard AR-15 upper receivers, LPKs, and buffer tube assemblies without modifications.

Who It’s For

This premium 80% lower fire/safe marked – billet is intended for experienced firearm builders and hobbyists who require a rigid, precisely machined platform for a high-performance AR-15. It appeals to those who prefer the structural benefits of billet construction over forged receivers, including tighter dimensional consistency and sharper external contours. The clear fire/safe markings make it particularly suitable for builds intended for competition, home defense, or range use where quick visual reference is beneficial. This receiver is not recommended for first-time builders; final machining requires a drill press, router jig, or mill, along with knowledge of receiver completion procedures.

Shipping & FFL

This item is classified as an unfinished receiver and does not require transfer through a Federal Firearms License (FFL) dealer when shipped to you. However, once you complete final machining to the point where it can function as a firearm receiver, it becomes a regulated firearm and must be transferred through an FFL dealer in your state of residence. We recommend consulting all applicable federal, state, and local laws before purchasing. Due to variations in state laws, some jurisdictions may restrict the sale or possession of 80% lower receivers; it is your responsibility to verify legal compliance in your area. Returns are accepted only for materials or machining defects; completed or modified receivers are not returnable.