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80 Percent Arms

80 Percent Arms Universal 80% AR15 Easy Jig

80 Percent Arms Universal 80% AR15 Easy Jig
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The universal fit Easy Jig™ is a patented device that makes machining your 80% lower easier, faster, and safer. Lowers finished with the Easy Jig™ have a better finish and hold tolerances that could not be achieved using any other jig on the market today. You do not need to own a drill press or mill to use the Easy Jig™. It truly makes finishing your lower a monkey simple process. On top of all this, it’s extremely durable and can be reused for dozens of lowers.

The Easy Jig™ is now a universal fit design which fits almost every brand of AR-15 lower.


  • Built in drill/end-mill depth gauge for the trigger and rear-shelf pockets (patent pending)
  • Eliminates the need for expensive measurement tools
  • Quick verification of depth setting – eliminates slippage issues that can ruin parts
  • Eliminates constant measuring to determine depth while milling


  • End-mill downward force can’t separate the drill press taper chuck
  • It is safer to move router by hand than to move the jig around on a drill press

Uses Common Hand Tools

  • The Easy Jig™ is designed to hold tolerances using a common hand-drill
  • No drill press is required, milling is done with a router
  • Routers are much more portable than a drill press, easily borrowed from a friend
  • Routers are made for cutting pockets using a template
  • Routers are cheaper than a drill press (about 75% less expensive).


  • Pocket drilling requires 10 holes drilled once – Traditional jigs require 42 holes to be drilled once, precisely aligned and clamped, then re-drilled to a larger diameter
  • Trigger pocket can be cut in 6 to 11 passes vs 25 passes required with a drill press
  • Router cuts pockets 5-6x faster
  • Hand-drilling the trigger group/safety selector holes is faster to setup
  • Lower can be completed in 1 hour (instead of 3 hours for the old drill press method)


  • The Easy Jig™ can be used to make dozens of lowers
  • Components are Type III hard anodized for extra wear resistance


Additional Info

Additional Info

Manufacturer 80 Percent Arms
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (10)

No commentReview by Joshua
- (Posted on 12/30/2016)
No commentReview by Tim
- (Posted on 12/19/2016)
No commentReview by james
Works great (Posted on 12/1/2016)
No commentReview by Ashley
- (Posted on 11/1/2016)
Good Review by Joseph
Received it in the mail , opened it up today and didnt realize it doesnt come with the bits I generally see advertised with the ez jig .
I am impressed by how solid this feels in the hand . (Posted on 10/12/2016)
No commentReview by Dion
- (Posted on 8/6/2016)
No commentReview by Michael
Much higher quality than anticipated. Be sure to use tape in order to keep the bolt clear while milling the rear shelf. It walked itself back in and was nicked by the milling bit. Most helpful piece of advice I can give. (Posted on 7/25/2016)
No commentReview by Marco
- (Posted on 7/22/2016)
No commentReview by Timothy
great product easy to use and the best part the great sevice i got from Rainer arms (Posted on 5/19/2016)
Amazing quality product!Review by Jeffrey
I bought this jig to complete a couple 80% lowers I had. The moments pick up the box you can tell it is going to be a quality product just by the weight of everything. The jig is very solid and easy to use. I used it on my James Madison tactical polymer lower and a standard billet lower. Fit both with zero issues! Definitely the jig to use for 80% lowers!! (Posted on 1/1/2016)

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