Replacement Tooling for Elite Builder 80% Jig



You probably won’t find the right tool bits for your jig and 80% lower receiver at the hardware store -- those bits are usually made of cheaper, lower-carbon steel or carbide. We prefer to offer gunsmiths like you the right stuff for aluminum: HSS bits, like this set in AMT’s 80% Jig Tool Kit.

Designed to work with the Elite Builder Jig, this bit set can be used for any AR-15, AR-9 or AR-10 (LR-308) jig and lower.

HSS Bits Are Best for Your 80% Lower HSS (high-speed steel) bits are often the best choice for cutting and drilling a billet or forged 80% lower: They’re much less expensive than carbide bits, they excel at withstanding high cutting forces, they may last longer, and they’re less likely to break while working.

No FFL required  Made in the USA  Lifetime Warranty

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.