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

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The AR-15 market continues to evolve, introducing innovative and lightweight solutions for a rifle platform that was always intended to be nimble, quick, and simple. We’re excited to introduce that latest innovation in partnership with Polymer80! Introducing the ultralight polymer G150 Phoenix AR-15 80% Lower. Let’s take a look:

This featherweight polymer 80% lower has been through extensive testing to ensure it’s strong enough to handle the rigors of abuse and long days at the range or the next three-gun competition. After testing and revision, Polymer80 reinforced this lower’s initial design by 15% before final production. The result is a tried-and-true AR-15 80% lower with a final weight of just 0.3 pounds!

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 80% Lower Jig
  • Works with any other 80% Jig!

Why a Polymer AR-15 80% Lower?

Polymer 80% lowers have been well-tested and proven among the AR-15 and 80% lower community. This ultralight lower affords the same ruggedness as any aluminum lower, yet its construction also affords many unique benefits.

If you’re nervous about machining an 80% lower, this polymer lower will be the perfect way to ease into the practice. Polymer is incredibly simple to drill and mill, and the material is forgiving.

The G150 Phoenix Includes Its Jig – and it’s the most affordable!

Many aluminum 80% lowers cost at least $50 to $100 with no jig. The G150 Phoenix Polymer 80% lower includes its own jig and all the tooling needed to complete it! The G150 Phoenix’s affordability and simple construction make it the perfect 80% lower for your first build, or for simple practice!

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.