Description
Piecing together that LR-308 rifle is easy and affordable with JMT’s Gen 2 Polymer 80% .308 Lower. This ultra-light receiver shaves critical weight off your newly minted rifle, improving performance and comfort.
Upgraded Polymer
This lightweight, reinforced receiver was tested, re-tested, and made to take the brute force of any .308 rounds you chamber. JMT took their existing polymer-fiber material and upgraded it to be tougher, harder, and stiffer. It can handle rapid fire, high heat, and high impacts with utter reliability.
Mil-spec/LR-308 Compatibility
This 80% receiver is compatible with any DPMS-pattern .308 components and features mil-spec fittings. Included is the 80% jig required for drilling the hammer, trigger, and safety lever pin holes, as well as an easy-to-follow template for cutting the main cavity to install your LPK.
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.
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 Restrictions
AR-15Lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally. 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 (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. We try our best to keep our shipping page current, but laws change daily.