Home PCC 9MM 9MM Complete Upper Receiver

9MM Complete Upper Receiver

As with all quality weapons, you have to start with a solid base and our JT-9 complete upper receiver is precision CNC-machined from solid aerospace billet aluminum. This is a top-tier JT-9 complete upper receiver perfect for any high quality AR-9 build. Add to that, our Juggernaut Tactical 15" free float hand guard and you have a very attractive, functional and lightweight precision weapon. We use our own 16" Nitride Lightweight Barrel with a 1:10 twist in combination with our anti-bounce bolt carrier group. Together, these make one of the smoothest operating AR-9 uppers around.
  • 4 Cerakote color selections available, which include Magpul FDE, Sniper Gray, Magpul OD Green, and Burnt Bronze.
  • 16” Nitride Lightweight Barrel
  • Nitride Bolt Carrier Group
  • 1/2x28 threads
  • JT Billet Flat-Top Upper Receiver
  • Designed specifically for pistol caliber AR builds
  • Widened ejection port for large pistol caliber cases
  • Oversized wall thickness to add strength for blowback operation
  • J 15" Free Float M-Lok Rail
  • JT Compensator
  • JT Ambidextrous Charging Handle
  • Made in the U.S.A.

Recent reviews

5 out of 5 stars

Great 9

Great carbine so far, Only wish I had more time to practice

Big S.

June 10, 2024

5 out of 5 stars

9 mm

All the parts of my 9mm were of excellent quality. Everything went together very well. Everything have a nice tight fit and it shoots flawlessly with 200 rounds fired. I recommend this build to anyone wanting to build a 9 mm AR.

Dennis W.

April 19, 2024

5 out of 5 stars

JT-9 (AR-9) Build

The team at Juggernaut are fantastic. I needed help with my JT-9 build and they not only helped but followed afterwards to make my needs were met.

Daniel S.

February 12, 2024