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DSG Duty Series 14.5" 5.56mm 4150CMV Barrel - Mid-length Gas - 1:7 Twist - QPQ Coated - MPI/HPT

Manufacturer: DSG Arms
SKU: DSG-4001-0009
Manufacturer part number: DSG-4001-0009
UPC: 842361115951
Availability: Out of stock - Currently No Backorders
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Are you looking for a government profile barrel with a 5.56mm chamber, .750” gas block seat, and mid-length gas system with the barrel length of 14.5”? Can we interest you in our top quality DSG duty-grade barrel? It has all the features that make a barrel good!

Our government profile barrel with a .750” gas block will reduce overheating, prevent bending, and improve stability of your firearm. Its 5.56mm chamber will lower the pressure while its 1.7 twist rate will stabilize the bullets leaving your AR15 rifle.

We have increased corrosion resistance by designing our barrel with 4150 chrome moly vanadium steel, which we have then coated with QPQ with nickel boron coating on its barrel extension to provide you with a tough, sturdy, and long-lasting product.

We have also performed both HP and MPI tests to further ensure the barrel’s durability in the field. For appearance and performance purposes, we have added an 11-degree recessed crown. Our duty-grade 14.5” barrel weighs 1.25 lbs., but since we have modeled it after a government profile, you will not have trouble carrying and shooting it. To lower the costs without compromising on design and quality, we have used the button rifling method.


  • 5.56mm Chamber
  • 4150 Chrome Moly Vanadium steel
  • QPQ Coated Barrel
  • Nickel Boron coated barrel extension
  • M4 feed ramps
  • 1:7 twist rate
  • 1/2x28 muzzle threads
  • HP & MPI tested
  • .750” gas block seat
  • Weight: 1.25 lb
  • Profile: Government
  • 11 Degree Recessed Target Crown
  • Button Rifled
  • Mid-length gas system
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