The same form and function of a mil-spec lower — with easier machining.
Polymer80’s G150 80% lower provides a great opportunity for new 80% builders to confidently cut and drill an easy-to-complete lower, all thanks to this receiver blank’s nylon-reinforced polymer construction.
Assembling Your 80% Lower
Once fabricated, this lightweight lower receiver will provide the same parts compatibility and functionality as any other AR-15 lower receiver. Pair with a barreled rifle upper or pistol upper, and a lower build kit to finish your custom build!
Polymer AR-15 80% Lower Specifications
- Compatibility: 5.56/.223, 300 BLK, 6.5 Grendel
- Construction: Nylon-reinforced polymer
- Color Options: Black, FDE, OD Green, Gray
- Fitment: 100% Mil-Spec
- Fire/Safe Engraving: No
- Features: Broached magazine well, integrated trigger guard
- 100% Made in The USA
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?
