Premium 80% Lower Fire/Safe Marked – Billet

Our Premium Billet 80% Lower has been redesigned with easier assembly in mind. This receiver has been enhanced with a threaded bolt catch release hole, as well as a threaded rear takedown detent hole. No more roll pins and loose springs!
These enhancements allow for a quicker, simpler install of your lower parts kit with fewer tools required. The Premium Billet 80% Lower comes with the needed screws for installing the threaded fittings.
80% Lower Specifications
Compatibility: 5.56/.223, 300 BLK, 6.5 Grendel
Construction: Billet 6061-T6 Aluminum
Finish: Type III Hardcoat Anodizing
Color: Matte Black
Fitment: 100% Mil-Spec
Fire/Safe Engraving: Yes
Features: Broached Magwell, threaded bolt catch and rear takedown detent holes, integrated heavy-duty trigger guard
100% Made in the USA
Assembling Your 80% Lower
Once your lower is fabricated, it’s time to assemble it. You’ll need the following components:
Lower Parts Kit
Buffer Tube Kit
Upper Assembly
Need Help Building? Read Our Guides
Follow our step-by-step picture guide to install your lower parts kit and buffer.
Not sure which parts to pick? Read our Ultimate Guide on How to Build an AR-15.
New to building custom guns? Read our FAQ: What Is An 80% Lower?