Our updated AR-15 billet 80% lower now paired with a quality lower parts kit.
Grab a quality, mil-spec LPK to pair with your new 80% lower and save! We've bundled a quality parts kit with our new billet lower to offer a convenient 2-for-1 package that makes your custom AR-15 build easier and more affordable.
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 and 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.
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: 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
Lower Parts Kit Specifications
- Includes full fire control group (hammer, trigger, disconnector, safety)
- Includes all required springs and pins
- Includes front and rear takedown pins
- Includes M4-style pistol grip
- Mil-spec, single-stage trigger
- Requires buffer tube kit to complete lower assembly
Need Help Assembling Your Lower and LPK?
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.
- Caliber:
- .223 Wylde
- Caliber:
- 5.56
- Caliber:
- .300 AAC Blackout
- Platform:
- AR15
- Finish:
- Anodized
- Material:
- Billet 6061-T6 Aluminum
