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JMT AR-15 80% Gen 2 Polymer Lower with Jig - FDE

Was: $89.99
Now: $69.99
In Stock! Ships Next Buisness Day!
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Now available in Flat Dark Earth (FDE), James Madison Tactical’s new Gen 2 Polymer 80% Lower Receiver ships with the included 80% jig for drilling your hammer, trigger, and safety lever, and cutting the fire control cavity for the LPK! 

Battle-Ready, Reinforced

This ultra-light JMT lower is just as tough as a billet receiver, thanks to JMT’s upgrades and reinforcements. It’s easy to machine, yet JMT upgraded their polymer-fiber material to be tougher, stiffer, and stronger. It’s capable of handling high impacts, rapid fire, and high heat.

Mil-Spec & Parts Compatibility

This 80% receiver is 100% compatible with any mil-spec components you wish to install. Grab a standard AR-15 lower parts kit, drop-in trigger, standard buffer or pistol brace, upper assembly, and any grip to complete your lower!

Upgraded Features:

  • Extended upper fire control box sections.
  • Upper left magazine well box section.
  • Webbed magazine wells match Magpul mags.
  • Extended bolt release roll pin posts.
  • New JMT Gen2 logo markings.

Manufacturer instructions can be found here.

No FFL is required to purchase this lower receiver. This polymer 80% lower receiver is not considered a firearm and is compliant with ATF receiver blank determinations (Gun Control Act of 1968). Not classified as a firearm as defined in 18 U.S.C. 921(a)(3).

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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James Madison Tactical

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.