Our updated billet AR-15 billet 80% lower with a quality lower build kit.
Grab a quality, mil-spec lower built to pair with your new 80% lower and save! This kit contains all components required to assemble the lower half of your custom AR-15 build in one kit. Just finish the lower, put it together, and slap on the upper.
The next generation of our precision-machined 80% lower features 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.
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
Lower Build Kit Specifications
- Includes full lower parts kit
- Includes mil-spec pistol grip
- Includes mil-spec buffer assembly
- Buffer weight: 3.0 ounces
- Buttstock: Mil-spec M4, six positions
- Buffer tube: mil-spec threads
Need Help Assembling Your Lower and Build Kit?
Once you've cut and drill your lower, follow our step-by-step picture guide to install your lower parts kit.
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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- CT,NY,NJ,PA,WA
- Platform:
- AR15
- Finish:
- Anodized
- Caliber:
- 5.56
- Caliber:
- .300 AAC Blackout
- Caliber:
- .223 Wylde
- Material:
- Billet 6061-T6 Aluminum
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