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DSG Duty Series 16" 5.56mm 4150CMV Barrel Mid-length Gas 1:7 Twist- MPI/HPT QPQ Coated w/Pinned FSB

Manufacturer: DSG Arms
SKU: DSG-4001-0004
Manufacturer part number: DSG-4001-0004
UPC: 842361108786
Out of stock - Currently No Backorders
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For our AR15 rifles, we want the best. If you are looking for one of the best barrel and barrel extensions in the market, consider our DSG duty-grade barrel, weighing 28 oz.  Our barrel features a .750” gas block, which is a good addition to our barrel due to the number of benefits it offers such as it prevents bending, decreases overheating, and increases stability of the weapon when you fire it.

We want to provide you with a product that could last you several long years. To achieve that, we have coated our barrel with QPQ, a corrosion resistant coating, and manufactured it using 4150 chrome moly vanadium steel, resulting in a sturdy and long-lasting product.

We have taken added measure to ensure optimal quality of the product by coating its barrel extension with nickel boron coating. When you equip your AR15 rifle with this barrel, you will not have to worry about your weapon malfunction as you fire it, as our product has cleared both the HP and MPI tests.

To lower the pressure, stabilize the bullets, and improve functioning, we have added a 5.56mm chamber, 1:7 twist rate, and 11 degree recessed target crown. To provide you with increased stabilization and reduced overheating and bending, we have modeled our barrel after the government profile.

Other features you should know about include a front sight block that comes without sight, detent, and spring, M4 speed ramps, button rifled, standard barrel nut, and triangle handguard cap, which works well with two piece handguards and rails.


  • 4150 Chrome Moly Vanadium steel
  • QPQ coated barrel
  • Nickel Boron coated barrel extension
  • M4 feed ramps
  • Front Sight Block Does NOT include sight, detent, & spring
  • Standard Barrel Nut
  • Triangle Handguard Cap
  • Government profile
  • 1:7 twist rate
  • 1/2x28 muzzle threads
  • HP & MPI tested
  • .750” gas block seat
  • Weight: 28 oz
  • 11 Degree Recessed Target Crown
  • Button Rifled


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