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Elite Builder (for 80% Jig) Tooling

Usually ships the same day or the next business day!

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 from AMT. These HSS bits are designed for the Elite Builder Jig, but they can be used with any 80% lower receiver designed for the AR-15 and AR-9.

Aluminum-Ready HSS Bits

We like to offer HSS (high-speed steel) bits for completing 80% lowers because they provide some of the best results when machining billet (6061-T6) or forged (7075-T6) aluminum. Sized bit shafts reduce flex while working, and razor-sharp flutes make quick work of raw metal with clean, polished results.

The quality of your 80% lower’s finished results is only as good as the drill bits and end mill bits you use to cut and drill it. You need precise, rugged bits like this Elite Builder 80% Jig Tool Kit. Designed as a replacement set for the Elite Builder Jig, these bits can also be used with any other 80% jig designed for the AR-15/AR-9 and LR-308 lower receivers.

HSS Bits Provide the Best Results
We stick to HSS (high-speed steel) bits for the jigs and 80% lowers as well because they’re specifically designed for tackling tough billet and forged aluminum. A spread of short- and medium-length end mill bits coupled with razor-sharp flutes make cutting the fire control cavity quick and easy.

  • (1) 3/8 Drill Bit - 5”
  • (1) 5/32 Drill Bit - 3”
  • (1) 3/8 Short End Mill - 3”
  • (1) 5/16 Short End Mill - 4”
  • (1) 3/8 Long End Mill - 4”

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Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.