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Polymer80 80% Lower Receiver and Jig Kit (AR-15) - Black

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Ready to build an ultra-light AR-15? Looking for the most affordable 80 lower receiver-and-jig combo you can find? You've found both! We've partnered with the engineers over at Polymer 80 to bring you a new, innovative Polymer 80 lower receiver for the AR-15. Alongside our other polymer kits, we're excited to introduce the G150 Phoenix!

This ultra-light polymer lower weighs just 0.3 pounds. That's a 50% weight reduction (with a Lower Parts Kit installed) compared to a forged or billet 80 lower! Even though this lower's incredibly light, it's by no means weak: Engineers tested and proved the design, then reinforced the entire thing by 15%. The G150 Phoenix has already proven it's worth, handling thousands of 5.56 rounds without failure.

For instructions on the G150 Phoenix, click here.

G150 Phoenix Polymer 80% Lower Features:

  • Weighs just 0.3 pounds
  • Composite solid core design
  • Stiffened magazine well
  • Reinforced buffer tube housing
  • Integrated trigger guard
  • Metal inserts for pistol grip, bolt catch pin
  • Includes proprietary jig
  • Works with any other 80 Lower Jig!

Why a Polymer AR-15 80% Lower?

Besides the obvious weight reduction, you get peace of mind knowing these units are just as strong as their aluminum counterparts. Also, polymer is easier to work with than aluminum. If you're not confident that you can build an AR-15 at home, this is the kit to buy. Even first-time builders can complete this lower with hand tools in less than 2 hours!

Plus, you won't have to worry about it getting dinged up while you run and gun.  Grab one now and see for yourself!

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:

Shipping Restrictions

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. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

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We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.