Our new billet 80% Lower, redesigned and improved!
It's here: The next generation of our precision-machined, premium billet AR-15 80% lower receiver! Featuring a new design with reinforced side walls and thicker aluminum, this 6061-T6 receiver blank is cut to exact tolerances and built to withstand serious abuse.
100% mil-spec fitment ensures this lower works with all standard AR-15 parts, including all upper assemblies, buffer tubes, pistol grips, magazines, mag catch assemblies, and internal fire control components like the hammer, trigger, safety, and pins.
Billet 80% Lower Specifications
- Compatibility: 5.56/.223, 300 BLK, 6.5 Grendel
- Construction: Billet 6061-T6 Aluminum
- Finish: Raw (ready for custom coating!)
- Color: Bare Aluminum
- Fitment:100% Mil-Spec
- Fire/Safe Engraving: No
- 100% Made in the USA with quality tooling
Assembling Your 80% Lower
Once your lower is fabricated, it's time to assemble it. You'll need the following components:
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?
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
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- Finish:
- Raw
- Material:
- Billet 6061-T6 Aluminum
- Caliber:
- .300 AAC Blackout
- Caliber:
- .223 Wylde
- Caliber:
- 5.56
- Platform:
- AR15
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.308 80% Lower - Billet Raw
.308 80% Lower - Billet
