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Modulus Arms Router Jig Extreme for AR-15 / AR-9 / LR-308 with Premium 80% Lower Fire/Safe Marked Billet (1-pack)
$388.95 $309.99 (You save $78.96)
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Free Shipping on all orders $325+

Description

SKU: MA-J-30815_AR2180-BAL

If you’re ready to build a top-tier AR-15 for pennies on the dollar, you should be starting with our new, Premium Billet 80% Lower! Expertly crafted in the USA from billet 6061 T6 aluminum, this lower is light, tough as Hell, and compatible with any AR rifle or pistol upper – all you need to do is machine it to completion.

Our Premium Lower makes final assembly a breeze, too, thanks to incorporating threaded bolt catch and rear takedown detent holes. A broached magwell makes reloading quick and intuitive, while a heavy-duty trigger guard and pre-engraved FIRE and SAFE markings reduce final assembly time and the need to do any at-home engraving.

No FFL or background is required to machine this lower into a stripped AR-15 lower receiver. If you can legally own a gun in your state, you can finish this lower with one of our many available 80% lower jigs, no background check or FFL transfer required.

Completed in a mil-spec Type III hardcoat anodized finish, this lower will match perfectly with any standard AR-15 upper receiver and barrel assembly. Because this lower is not considered a firearm until completed, it can be shipped straight to your front door alongside the required jig!

(1) Black Fire/Safe Marked Billet 80% Lower Receiver:

  • Color: Anodized Black
  • 100% Mil-Spec
  • Quantity: 1
  • Fire/Safe Marked: Yes
  • Billet 6061-T6 Aluminum
  • Threaded Bolt Catch Hole
  • Threaded Rear Takedown Detent Hole
  • Screws and Hex Key
  • Broached Magwell
  • Enhanced, heavy duty trigger guard
  • 100% Made in the USA
  • NO FFL REQUIRED

No FFL is required to purchase this lower receiver. This forged 6061 aluminum 80% lower receiver is not considered a firearm and is compliant with the gun control act of 1968 not classified as a firearm as defined in 18 U.S.C. 921(a)(3).

 

Router Jig Extreme 80% Lower Jig (by Modulus Arms):

PLEASE NOTE: THE TOOLING FOR THE MODULUS ARMS ROUTER JIG EXTREME DEPENDS ON THE BRAND AND MODEL OF YOUR ROUTER. PLEASE SEE THE “SIZING CHART” BELOW TO SELECT THE CORRECT TOOLING OPTION.

Check out the latest and most advanced router-based 80% lower jig on the market, the Router Jig Extreme by Modulus Arms! Finally you can stop looking for a completely universal jig! Sure, it'll mill the standard AR-15 and AR-9 sized 80% lower receivers.  But you can also stop wondering whether it'll accept the DPMS gen 1 patterned LR-308 lower or the Colt patterned AR-10 lower.  It does both.  Now you can do all four types of lowers without having to buy an expensive jig conversion kit! On top of that, this jig will blast through your lowers in record time!

And the Router Jig Extreme is jam-packed with features. Modulus Arms took their original router jig and upgraded the hell out of it. The Router Jig Extreme will blow through your 80% lower and leave a CNC machine quality trigger pocket that looks like it was professionally done. The Router Jig Extreme uses built in trigger pocket template guide tracks. All its drilling surfaces are hardened steel too, so none of them will ever wear out. It’s got built in depth guides, so you don’t even worry about measuring anything. Just keep adjusting your router’s SpeedMill ™ bit to each new milling depth, and repeat until you’re done.

The Router Jig Extreme's side plates are and inch and a half thick. The drill holes are lined with ultra-hardened steel bushings too, so you'll get straight and perfect alignment with your safety selector and trigger pins. It's also got a shop vac attachment to help keep the shavings and debris out of your way while you work. Plus, the Router Jig Extreme's design is self-centering, with no-touch side plates, so you get the most accurate results and perfectly aligned trigger pocket and side holes possible.

Want to know more? See for yourself with the instruction manual here.

Besides the trademarked SpeedMill ™ end mill bit, the tooling comes with all the drill bits you need to finish your 80% lower in no time.

Router Jig Extreme (by Modulus Arms) Tooling:

  • (1) SpeedMill ™ (See the sizing guide below to determine which tooling you need)
  • (1) 3/8" Drill Bit
  • (1) 21/64" Drill Bit
  • (1) 5/32" Drill Bit

Sizing Guide:

PLEASE NOTE: THE TOOLING FOR THE MODULUS ARMS ROUTER JIG EXTREME DEPENDS ON THE BRAND AND MODEL OF YOUR ROUTER. PLEASE SEE THE “SIZING CHART” BELOW TO SELECT THE CORRECT TOOLING OPTION.

SpeedMill V1
SpeedMill V2
SpeedMill V3
SpeedMill V4 (Requires Large Router Plate Adapter)
Bosch PR10E
Bosch PR20EV
DeWalt DWE6000
Porter Cable 6430
Porter Cable 6435
Rigid R24012
Craftsman 28212
DeWalt DWP611
Porter Cable 450
Makita RT0701C

Bosch 1617EV
Bosch 1617EVS
Craftsman 2767
Craftsman 27683
Craftsman 50429
DeWalt DW616
DeWalt DW618
Hitachi M12VC

 

No FFL Required Made In The USA Lifetime Warranty

Modulus Arms Router Jig Extreme for AR-15 / AR-9 / LR-308 with Premium 80% Lower Fire/Safe Marked Billet (1-pack)

$388.95 $309.99 (You save $78.96)
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Free Shipping on all orders $325+