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DSG Duty Series 9" 300 Blackout 4150CMV Barrel - QPQ Coated - MPI/HPT

Manufacturer: DSG Arms
SKU: DSG-4001-0012
Manufacturer part number: DSG-4001-0012
UPC: 842361110963
Out of stock - Currently No Backorders
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Our DSG duty-grade 9” barrel has all the makings for a top quality and dependable barrel for your AR15 rifle. Our 300 blackout barrel, described as having a slighter longer neck on the cartridge, improves safety while you aim and shoot and increase shooting accuracy.

With precision shooting being one of the main factors in choosing a barrel for your rifle, we have also included a 1:7 twist rate, flat muzzle crown, and heavy profile. We want your barrel to last so we have designed it using premium quality 4150 chrome moly vanadium steel, coating the barrel and barrel extension with QPQ and nickel boron to reduce corrosion.

Our duty-grade barrel weighs 18.4 oz. and has cleared HP and MPI tests, thus further proving its ability to withstand heat when you fire your weapon. The barrel’s .750 gas block seat prevents bending, improves stability, and decreases overheating.

We have also worked on reducing our costs by using the button rifling method, but without compromising on the quality of the barrel.Other features of our barrel include M4 feed ramps, pistol-length gas system, and 5/8x 24 muzzle threads. Our DSG duty-grade 9” 300 blackout barrel is a good choice for anyone looking for an affordable and top quality option for their rifle.



  • 4150 Chrome Moly Vanadium steel
  • QPQ coated barrel and barrel extension
  • 300 Blackout Chamber
  • Nickel Boron coated barrel extension
  • M4 feed ramps
  • Heavy profile
  • 1:7 twist rate
  • 5/8x24 muzzle threads
  • Pistol-length Gas System
  • HP & MPI tested
  • .750” gas block seat
  • Weight: 18.4 oz
  • Flat Muzzle Crown
  • Button Rifled
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