The Juggernaut Tactical Ultimate Jig is the end-all, be-all black rifle gunsmithing station. This drill press jig allows you to quickly and precisely finish any AR-15, AR-10/LR-308, or AR-9 80% lower receiver in under two hours.
The Juggernaut's commercial-grade Cobalt drill bits and end mill bits guarantee you'll get a mirror finish inside the fire control cavity, with perfectly-aligned pinholes for your lower parts kit. The entire jig's made from billet 6061 T6 aluminum and features a mil-spec, Type III hardcoat anodized finish.
The Juggernaut Ultimate lives up to its name with oversized and hardened top plates, top-of-the-line, 17-4 stainless steel drill bushings, and a conveniently integrated depth gauge that measures your pilot holes and end mill bits for you. No experience is 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, Beginner Difficulty
The Juggernaut Ultimate is one of the largest, most capable 80% jigs on the market, but it's also the easiest jig to learn with and use confidently, especially for first-time builders.
Setting up the jig is incredibly easy and takes less than five minutes. Just place your 80% lower inside the jig and secure it with the provided hex bolts. Install the first drilling top plate, and you're ready to start forming the fire control cavity!
The alignment tool automatically indexes the lower, ensuring it's perfectly positioned. No measuring required. The tool even includes a high-visibility LED light so you can see clearly while you cut and drill.
The Juggernaut Does the Work for You
The included top plates act as pre-cut templates, drilling and cutting out the fire control cavity for you. The first pilot hole template gets the fire control cavity drilled out for you. The second template allows you to finish cutting the fire control cavity, and the third template lets you easily finish the trigger slot and rear shelf.
High-speed drill bushings on all the side plates make sure every pin hole is perfectly centered for drilling (even if you use a hand drill), which guarantees your trigger, hammer, and safety pins all line up for a perfect installation.
All You Need is a Drill Press
The Juggernaut Ultimate 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 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 on your drill press, ensuring your press and chuck are good to go for the next receiver.
- (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.
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