Polymer80 LR-308 80% Lower Receiver

Build your custom AR-10 with an easy-to-finish polymer 80% lower.
This .308-compatible 80% lower is constructed from lightweight but tough nylon-reinforced polymer. This receiver blank’s polymer construction makes drilling and cutting a little quicker and easier — making this unit perfect for first-time 80% builders!
Assembling Your .308 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 .308 rifle upper and a .308 lower build kit. Or just grab an AR-10/LR-308 build kit to finish your custom rifle!
Polymer .308 80% Lower Specifications
Compatibility: .308 Winchester, 6.5 Creedmoor
Construction: Nylon-reinforced polymer
Color Options: 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?