Precision 80% 308 jigs for completing your AR-10/ LR-308 build.
Starting the assembly process of your .308 80% lower or LR-308 build kit is easy with the right jig. To ensure proper compatibility with the DPMS .308 platform's lower receiver, we located a range of gunsmithing jigs to suit your budget. Whether it's an affordable, ultralight polymer jig-and-lower combo from Polymer 80, or the precise and rugged Elite Builder Jig, every kit comes with the drill bits and required end mill bits for drilling and cutting your receiver blank for final assembly.
It's important to note the modern .308 AR is not typically found in the original ArmaLite AR-10 (or KAC SR-25) configuration. Minor variances in physical receiver dimensions and internal components render the two platforms incompatible for assembly or parts mixing. With that said, the DPMS Panther LR-308 platform is the "new AR-10", offering the same accuracy, function, looks, and reliability as the original ArmaLite rifles for a fraction of the price.
That's why we chose to support .308 builds with the LR-308 platform, offering a range of mil-spec, MOA-accurate build kits, upper receivers, and corresponding 80% lowers. Every 80% .308 jig available here is guaranteed to work with any polymer, forged, or billet DPMS-type 80% lower in the .308 caliber!
First time building a .308? Read our guide: The AR-10 vs. The AR-308 (Parts Compatibility).
Regardless of your jig preference, each kit comes with all the components required to successfully cut and drill your receiver blank for assembly with the lower parts kit, upper receiver, and buffer:
Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. Because of these restrictions, we cannot ship our products to certain states. Please confirm whether your state is restricted on our Shipping & Return Policy before placing an order. We cannot fulfill orders to restricted states if placed.
Your .308 build awaits.
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