Juggernaut Tactical Ultimate Jig with Tooling (AR-15 / AR-9 / AR10)



If you’ve been browsing forums, reading reviews, hunting for the perfect 80% lower jig, stop what you’re doing. The Juggernaut Tactical Ultimate Jig is the one black rifle gunsmithing kit to rule them all. Capable of completing any AR-15, AR-10/LR-308, and AR-9 80% lower receiver, the Juggernaut Ultimate Jig is the key to building your personal arsenal using one, simple workstation and nothing more than basic tools. Unique features like oversized and hardened top plates, commercial-grade bits and cutters, 17-4 stainless steel drill bushings, and a conveniently integrated depth gauge mean you can start drilling and cutting lower receivers with truly professional results. No experience necessary.

Juggernaut Ultimate Jig Features:

  • Self-aligning jig indexes lower for you
  • Patented alignment tool includes work light
  • Incredibly simple setup with a few hex bolts
  • Completes an 80% lower in one to two hours
  • Completes 25+ lowers with original tooling
  • Compatible with AR-15, AR-10/LR-308, and AR-9
  • Precision-machined, billet aluminum side plates
  • Laser-etched markings make setup and use easy
  • Proudly made in the U.S.A w/ Lifetime Warranty

Professional-Grade with Beginner Difficulty

This jig’s made entirely from billet 6061 T6 aluminum and it’s finished off with a sexy, mil-spec anodized finish. It’s one of the biggest, heaviest, and most capable jigs on the market, but it’s also the easiest one to use. Simply secure your billet or forged 80% lower between the two side plates using the provided hex bolts and alignment tool. The entire jig is clearly marked, showing you how to set it up. Secure the first top plate, and you’re ready to start drilling! Setup takes less than five minutes, and the alignment tool even provides a bright LED work light to make machining easier.

The Juggernaut Drills and Cuts for You

Once set up, the Juggernaut Jig aligns all the holes you need to drill for you. It even aligns and guides your end mill bit, cutting out the fire control cavity without any measuring required. Those high-speed drill bushings ensure every pin hole is perfectly centered (even with a hand drill), every time.

All You Need is a Drill Press

The Juggernaut Jig works with any mill or drill press. All you need is a basic depth gauge and the jig does the rest! Since drill presses aren’t designed for milling, the Juggernaut Jig includes a pilot hole top plate. This top plate removes the bulk of the aluminum inside the fire control cavity, using vertically drilled holes. The little amount of aluminum that’s left can then be safely and quickly milled out with little to no resistance, ensuring your drill press and chuck are good to go for the next receiver.

What’s Included:

  • (1) H 0.266” Cobalt Drill Bit
  • (1) 0.375” Cobalt Drill Bit
  • (1) 0.156” Cobalt Drill Bit
  • (1) 0.125” Cobalt Drill Bit
  • (1) 31/64” Cobalt Drill Bit
  • (1) 3/8” Carbide End Mill Bit
  • (1) ¼” Carbide End Mill Bit
Please note: Due to design differences, this jig is not compatible with our .308 80% lower.
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

80-Lower.com 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, 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.