The 80% Lower Fire/Safe Marked – Anodized Black is a billet 7075-T6 aluminum receiver blank. This lower is machined from a solid block for superior strength and features factory-engraved “FIRE” and “SAFE” markings. The hard anodized black finish provides corrosion resistance. It is designed for builders to complete into a functional AR-15 lower receiver, compatible with standard mil-spec AR-15 parts kits and components.
Key Features
- Machined from 7075-T6 billet aluminum for maximum durability.
- Factory-engraved “FIRE” and “SAFE” selector markings.
- Hard anodized Type III Class 2 black finish for wear resistance.
- Standard mil-spec dimensions ensure compatibility with AR-15 jigs and parts.
- Fire control group pocket and trigger pin holes require final machining.
Specifications
| Caliber / Type | Multi-Caliber (AR-15 Platform) |
|---|---|
| Material | 7075-T6 Aluminum Billet |
| Finish | Hard Anodized Black |
| Compatibility | Standard AR-15 / Mil-Spec Components |
| Weight | Approx. 8.5 oz (unfinished) |
Billet construction offers greater material integrity than forged lowers, with more consistent wall thickness around critical areas. This provides a rigid foundation for your build, reducing flex and improving long-term reliability. As an unfinished receiver, it is not classified as a firearm under federal law until you complete the machining process, making it a core component for a custom AR-15 project.
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