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AR15 300BLK 8.5 HB Barrel

AR15 300BLK 8.5 HB Barrel

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Our Price: $129.99

Quantity in Stock:(Out of Stock)
Product Code: 240189210649


AR15 300BLK Barrel

AR15 300BLK Nitrite, 4150 Barrel

R&B ARMS 8.5in .300 Blackout HB barrel is the perfect barrel to add your next AR15 build . This barrel is made from 4150 CrMoV Steel with a Nitrided finish and nitrided extension. Featuring a pistol length gas system with a .750″ gas port and a 1:7 twist, this barrel provides top accuracy and precision for your .300 Blackout build. Proudly made in the U.S.A. veteran owned and operated business

Our dedication to our customers is the same as our dedication to our country!

We will ensure satisfaction with every AR15 300BLK Barrel and make sure its the right fit for your rifle.


  • 8.5" 4150 CrMoV Steel
  • 1/7 twist
  • Pistol-Length gas port .099" diameter
  • Uses a .750" gas block
  • Nitrided with nitrided extension
  • Extension torqued and gas port drilled after Nitride
  • Muzzle device 5/8 x 24
  • Standard Barrel Profile
  • Weight 19 ounces

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