Premium 80% Lower Fire/Safe Marked – Billet
Specs at a glance
About this product
Premium Billet 80% Lower Receiver – Fire/Safe Marked
SKU: Billet-80-FS | Price: $77.00
Stop Fighting Roll Pins. Start Building.
We listened to builders in our shop and online. The biggest headache on any 80% lower is those tiny roll pins and springs for the bolt catch and rear takedown. They’re frustrating, they fly across the room, and they can mar your finish. We fixed it.
This Premium Billet lower comes with threaded, screw-in fittings for both the bolt catch release and the rear takedown detent. That means you use an Allen wrench instead of a punch and hammer. No more loose springs, no more mangled pins. It’s a cleaner, faster, and more secure installation right out of the gate.
Built for Performance, Designed for Simplicity
This isn’t just a stripped piece of aluminum. It’s a precision-machined starting point for a rifle you can trust. We start with a solid block of American-made 6061-T6 aircraft-grade aluminum and CNC-machine it into a fully-featured, Fire/Safe marked 80% lower. The Type III Hardcoat Anodizing isn’t just for looks; it’s a battle-grade finish that resists wear and corrosion.
The integrated, heavy-duty trigger guard is part of the billet itself—it won’t break off. The magwell is professionally broached for smooth, reliable magazine changes every time. And because it’s 100% mil-spec in its critical dimensions, it will fit with any standard AR-15 upper receiver and parts kit chambered in 5.56/.223, 300 Blackout, or 6.5 Grendel.
Specifications & Features
- Material: 6061-T6 Billet Aluminum
- Finish: Type III Hardcoat Anodize (Matte Black)
- Compatibility: 5.56 NATO / .223 Remington, 300 BLK, 6.5 Grendel
- Fire/Safe Markings: Yes, professionally engraved.
- Key Feature: Threaded bolt catch pin hole & threaded rear takedown detent hole. Includes installation screws.
- Other Features: Integrated trigger guard, broached magwell, 100% mil-spec fitment.
- Origin: 100% Made in the USA.
What You Get in the Box
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What's in the box
- Premium 80% Lower Fire/Safe Marked – Billet