AR-9 80% Lower Receiver

$169.00
Color
California Compliant
Quantity
The JT-9 Lower Receiver in 80% completed form. The JT-9 is precision CNC-machined from solid aerospace billet aluminum. It is not a cheap forging. This is a top-tier AR-9 lower receiver perfect for any high quality AR-9 build. Some of the features we include are last round hold open, ambidextrous bolt release, internal magazine lock (CA only), and steel magazine stop. If you are in California, please choose the California Compliant option. This comes with an internal magazine lock and our Hellfighter rear pin assembly. IF YOU CHOOSE THE CALIFORNIA COMPLIANT OPTION, THIS LOWER IS ONLY COMPATIBLE WITH OUR UPPER DUE TO THE INTERNAL MAGAZINE LOCK FUNCTION. FOR ALL OTHER RESIDENTS, THIS LOWER WILL FIT ANY OTHER STANDARD AR-9 UPPERS. 
 
Because of our AR-9 design, we were able to keep all of the mil-spec dimensions from the AR-15. This will allow you to use almost any jig compatible for AR15 to complete the JT-9.
  • 4 Cerakote color selections available, which include Magpul FDE, Sniper Gray, Magpul OD Green, and Burnt Bronze.
  • The non-Cerakote finish options include Black Anodized.
  • T6 Heat-Treated 6061 Billet Aluminum
  • Completed weight: 8 ounces
  • Integral winter trigger-guard for added strength
  • Flared magwell to improve mag changes.
  • Laser engraved JTAC logo
  • Threaded bolt catch
  • Upper tensioning screw
  • Bolt catch assembly screw
  • No roll pins need for assembly
  • Ambi Bolt Release/hardware
  • Lifetime warranty against manufacture defects
  • Threaded rear takedown pin detent hole
  • Fire and safe engraved on both sides
  • Uses Glock magazines
  • LRBHO only guaranteed to work with our upper. Uppers from other manufacturers may not work.
  • Designed for blowback operation
If you would like to finish your JT-9 80% Lower at home, we offer a jig-kit here. Because 80% Lowers are not considered firearms by ATF, we can ship them right to your front door with no FFL required... but finished rifles must meet all applicable laws and you must be able to legally own a firearm. Compliance with all laws is YOUR responsibility.

Note: This item is restricted from shipping to New Jersey, New York, Hawaii, Connecticut, Rhode Island, Washington D.C., Maryland, Illinois, California, Washington, and Denver Colorado.

Note: Due to ATF final rule 2021R-05F (more info here), you cannot order an 80% Lower and jig-related products at the same time. If you have both in your cart, you will not be able to complete the checkout process.

Recent reviews

5 out of 5 stars

Outstanding quality

The AR9 lower has outstanding quality and finish work, love all the features Juggernaut has added and feed Glock mags perfectly with zero issues.

Jared C.

Verified
March 16, 2024

5 out of 5 stars

AR-9

Awesome lower. Milled out perfectly and fit excellent with upper.

lelan m.

Verified
March 15, 2024

5 out of 5 stars

Works well!

A little sketchy at first going into my jig but once it was in there I was good to go.

Anonymous

Verified
March 13, 2024

5 out of 5 stars

Awesome product

High quality lower would buy again

L.S

Verified
March 12, 2024

5 out of 5 stars

JT Delivers

Soon as I got this in my hands. I ordered a JT15. It was that impressive.

Joshua

Verified
March 8, 2024

5 out of 5 stars

Ar-9 80%

This lower is fantastic! Best features and great cerakote. Very happy with the way everything turned out

E.E.

Verified
March 8, 2024

5 out of 5 stars

JT AR-9 80% Lower

JT is top notch. Absolutely love the AR-9 lower! Will definitely be returning for more build stuff.

80 b.

Verified
March 2, 2024

5 out of 5 stars

AR 9

Best AR-9 platform I've seen.

James S.

Verified
March 2, 2024

5 out of 5 stars

Quality construction

I ordered a few AR-9 from Juggernaut and they're a step above the rest with fit and finish. Very happy!

Nicholas K.

Verified
March 1, 2024

5 out of 5 stars

Excelent!

Excellent! Fit and finish off the charts... couldn't be happier!

Mathew G.

Verified
February 25, 2024

5 out of 5 stars

nicely done

I have several of 9mm lowers.the only problems I have had is you sent me one that did not have last round hold open hardware on it but after contacting they sent it out to me. I have had to machine out several of the uppers to accommodate the last round hold open lever to make it work but that is the fault of the uppers and after doing this it functions flawlessly. you make a great product. too bad I can't buy more due to new unconstitutional state laws that have passed in my state

John S.

Verified
February 24, 2024

5 out of 5 stars

AR-9 80% Lower

Nice lower LRHO works great

Jedd C.

Verified
February 23, 2024

5 out of 5 stars

AR-9 Lower

fits perfect to upper nice and snug, looks great and performs flawlessly. Have recommended to several people and all are very happy with product.

Matthew R.

Verified
February 22, 2024

5 out of 5 stars

Ar-9

I had previously purchased other lowers from different providers, while the finished product worked as it should. They do not compare to the quality from Juggernaught. Had I known prior to purchasing I would only have only acquired from JT.

Marty M.

Verified
February 22, 2024

5 out of 5 stars

Great!

Quality is superb and I plan to get more.

Mark A.

Verified
February 14, 2024

5 out of 5 stars

Ar9 lower

Works great πŸ‘

Richard F.

Verified
February 14, 2024

5 out of 5 stars

One of the nicest AR-9 80% lowers available.

Its a nice lower. It machined well and the Mat-9 sits and works great on this lower.

Jeff S.

Verified
February 11, 2024

5 out of 5 stars

Tried the rest now try the best!

I have tried all the 80% lower receivers out there. Some were good but none were equal to JTactical. Superb performance& appearance with LRBHO makes a huge difference. If you're using a router jig you will need to remove the roll pins, the magazine catch, and the ejector. If you tell Jtactical to NOT install, but include these items when you purchase, you will be milling faster.

Paul B.

Verified
February 5, 2024

4 out of 5 stars

Almost Perfect but might just be me

the magazines fit perfectly, Even the bolt catch release works. The one issue I have and might be very minor is, with a loaded Magazine I can't seem to get the Mag release to release it. It's probably the amount of tension on the mag catch, but I just cant get it to release. Empty mag, no problem.

Richard B.

Verified
February 5, 2024

5 out of 5 stars

Ar9 80%

Great product. Great customer service as well

Kevin L.

Verified
February 5, 2024

5 out of 5 stars

AR9

Glock clips work nicely and the ambidextrous is a big plus, I shoot lefty. I also have the AR45 which is also awesome.

JEFFREY J.

Verified
February 4, 2024