Elite Builder 80% Lower Jig – AR-10 Patriot Upgrade

Want to fabricate AR-10 80% lowers? Already own the AR-15 Elite Builder Jig? Grab this upgrade kit. It provides the plates needed to cut and drill .308 lowers, allowing you to build larger, more accurate custom rifles.

These two plates secure the larger lower receiver within the jig, allowing you to reuse the same AR-15/AR9 drilling and milling templates to complete your AR-10 lower. You can also reuse your jig’s existing drill bits and end mill bits.