Worried that a polymer lower receiver isn’t up to the task of handling your AR’s constant abuse? We’re excited to bring in the new Gen 2 Polymer 80% Lower from James Madison Tactical! This ultralight JMT lower includes the necessary 80% jig for cutting and drilling the fire control cavity, and it includes beefed up designs and upgrades to ensure it’s truly battle-ready.
Stronger, Tougher Polymer
JMT took extra time to develop their reinforced polymer for this new 80% lower. Engineers incorporated a way tougher polymer-fiber construction that can withstand rapid fire, high heat, and the rigors of the high impacts, the hunt, or any 3-gun competition.
Considered 100% mil-spec, this ar 15 polymer lower is compatible with any “retail” AR components, including standard LPKs, buffers, and grips. JMT even cut the mag well to perfectly match your favorite Magpul magazines.
- 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.
Instructions 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).
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.