Important Update: In compliance with HB 1240, we regret to inform our valued Washington State customers that we are no longer offering AR-style product for sale in the state. We appreciate your understanding and support as we continue to provide a wide range of other high-quality product. For more information on HB 1240 and its impact on our inventory, please visit the official webpage of HB 1240( or feel free to contact our customer service team.

AR-9/9X19 4.5" 1:10 Twist Black Nitride Finish (Made in USA)

AR-9/9X19 4.5" 1:10 Twist Black Nitride Finish (Made in USA)


  • Length: 4.5"
  • 9mm Caliber
  • 1:10 Twist
  • 1/2x36" Thread Pitch
  • 4150 gun quality steel, heat treated,stress relieved.
  • Black Nitride finish
  • Chrome Moly Vanadium
  • Made in the U.S.A.
  • Fits: AR-15

Barrel Length: 4.5"
Caliber: 9mm
Twist Rate: 1:10
Muzzle Thread: 1/2x36
Barrel Coating: Nitride

WARNING to California Residents: ⚠️ According to California's Proposition 65, some products sold on this website may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

We Ship Fast!

All orders ship out within 48 business hours

  • Product Code: BR9-4
  • Availability: In Stock