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Jig Tooling & Parts

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  • Elite Builder (for 80% Jig) Tooling

    Elite Builder (for 80% Jig) Tooling

    Cutting and drilling your 80% lower receiver can be a breeze, or a pain -- it truly depends on the drill bits and end mill bits you use to machine it. That’s why you need to invest in the highest quality bits available, like this 80% Jig Tool Kit...

    $89.99
  • Tap Magic EP-Xtra® Cutting Fluid (4oz)

    Tap Magic EP-Xtra® Cutting Fluid (4oz)

    Lubrication required for your 80% jigs. If you're cutting and drilling any aluminum 80% lower or frame, you need appropriate cutting fluid. No, regular old WD-40 won't do. Tap Magic EP-Xtra Cutting Fluid provides proper lubrication, chip control, and...

    $9.99
  • Elite Builder 80% Lower Jig - AR-10 Patriot Upgrade

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

    These extra machining plates will convert your AR-15/AR9 Elite Builder Jig into the Elite Builder Patriot 80% Lower Jig.  If you want to invest in a new .308 or 6.5 Creedmoor build kit and you want to use your EB Jig to finish for yourself the...

    $69.99
  • Elite Builder 80% Lower Jig - AR-15 Patriot Upgrade

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

    These extra machining plates will convert your AR-10 Elite Builder Jig into the an Elite Builder Patriot 80% Lower Jig. The Patriot setup works with AR-10 / LR-308 80% lower receivers, too. If you want to invest in a new .223 of 5.56mm AR build kit and...

    $69.99
  • Broken Armory Tooling for 80% Jig

    Broken Armory Tooling for 80% Jig

    Quality replacement tooling for the Broken Arms 80% Jig. The Broken Arms 80% AR-15/AR9 Jig provides reusable plates and templates, allowing you to complete more than one AR-type 80% lower receiver. But drill bits and end mill bits inevitably wear out...

    $84.99
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Need to replace jig parts for your 80% project?

The drill bits and end mill bits that turn your 80% lower into a finished, precision-milled AR 15 receiver are the critical components of any 80 Lower Jig. Using dull, over-worked bits will produce a sub-par receiver that hangs triggers, sticks magazines and fails to fire consistently. Even worse, the milling process can result in some nasty injuries thanks to broken bits and flying debris.

Replacement 80% Jig Bits and Plates 

Generally speaking, a good set of bits can finish two 80% lowers. We strongly recommend investing in an extra mill bit for your first build, just in case – after all, you’re turning raw aluminum with steel at high rates of speed. Pressure, heat and speed can result in a broken bit and a halfway-finished lower sitting in a jig.

You never want to remove your lower from the jig once you’ve started machining, so having extra bits on hand will prevent issues like this. We only sell quality, made-in-the-USA hardware. Our 80 Lower Drill Bits and end mill bits are solid carbide steel and feature 0.75” flutes for performance and precision. 

You’ll also find we carry 3/8” bits, 5/32” bits, 19/64” bits and 3/8” drill stop collars – that includes everything you need to begin machining and finishing your own 80 Lower.

 


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