JMT’s beefed up and redesigned Gen 2 Polymer 80% Lower is now available in .308 and 7.62 NATO. Build an AR-10 clone or accurate bench rifle and enjoy critical weight savings without sacrificing reliability.
This receiver blank was massively reinforced, tested, and re-tested by JMT to guarantee it handles any .30-cal loads you slam through the muzzle. JMT took their existing polymer fiber and upgraded it to be tough, stiffer, and harder, ensuring your receiver is utterly reliable.
LR-308 / Mil-Spec Compatibility
Its 100% mil-spec construction accepts all .308 DPMS components, mil-spec buffer tubes, standard .308 LPKs, and your favorite Magpul magazines. The mag well’s even cut to match! This receiver includes the 80% jig required for drilling the LPK pin holes and trigger cavity, making it a great value for completing your LR-308 or AR-10 clone on a budget.
- 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).
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: www.P65Warnings.ca.gov
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www.80lowerjig.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.