Sons of Liberty Gun Works .300BLK CrMoV DRP Profile Pistol Length Barrel - 5/8x24 - 13.9"

SKU: 13.9COMBAT300
MPN: 13.9COMBAT300
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The Sons of Liberty Gun Works .300BLK CrMoV DRP Profile Pistol Length Barrel is a high-quality, precision-machined barrel that is perfect for building a short-barreled rifle (SBR) or pistol in .300 AAC Blackout. The barrel is made from 4150 CrMoV steel and has a QPQ finish for superior corrosion resistance and durability.


  • High-quality, precision-machined barrel
  • Made from strong and durable 4150 CrMoV steel
  • QPQ corrosion-resistant finish
  • DRP profile helps to reduce barrel whip and improve accuracy
  • 1-7 twist rate is well-suited for shooting a variety of
  • .300 AAC Blackout projectiles
  • Threaded 5/8x24 at the muzzle for easy attachment of a muzzle device
  • .750" gas block journal for use with a standard AR-15 gas block

The barrel features a DRP profile with a 1:7 twist rate. It is threaded 5/8x24 at the muzzle, so you can easily attach a muzzle device of your choice. It also has a .750” gas block journal, so a standard AR-15 gas block can be used.

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Barrel CoatingQPQ Nitride
Barrel ContourDistinct Rigid Pattern
Barrel Length13.9
Barrel Material4150 Chrome Moly Steel
BrandSons of Liberty Gun Works
Caliber Gauge300 Blackout
Gas Seat Diameter.750
Gas System LengthPistol
Thread Pattern5/8 X 18
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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