Elite Builder 80% Lower Jig – AR-15 Patriot Upgrade

If you bought the AR-10 Elite Builder Jig to fabricate a .308 80% lower, and you now want to fabricate an AR-15 80% lower, you’re in luck: This “Patriot” upgrade provides the smaller plates required to secure an AR-15 80% lower in your AR-10 Elite Builder Jig.

With these plates, you can reuse your EB Jig’s existing drilling and milling templates, and your existing drill bits and end mill bits can be used, too.