Sons of Liberty Gun Works 5.56 Combat Grade Barrel – 13.7″

Original price was: $189.00.Current price is: $171.18.

Out of stock

Get notified when this product is back in stock

SKU: 13.7COMBAT556 UPC: 691821298440

Product Description

Sons of Liberty Gun Works’ newest barrel length is designed to work with the NOX line of muzzle devices to provide the shortest length possible without being an SBR. When pin and welded the 13.7″ barrel and NOX muzzle device will come out to exactly 16.1″ without any shims or crush washers.


  • Length: 13.7″ Government contour
  • Caliber: 5.56 NATO Chamber
  • Twist Rate: 1/7
  • Gas System: Mid-length
  • Thread Pitch: 1/2×28
  • Weight: 33 oz
  • Material: 41V50 Chrome Moly Vanadium steel
  • Finish: Salt bath nitride
  • Magnetic particle inspected
  • High pressure tested

This Combat series barrel has been machined to a handy Government contour, providing an excellent balance between lightweight and thermal stability. A reliable mid-length gas system will help your AR function even in adverse conditions. To ensure your barrel is of the highest quality, each one is high pressure tested and magnetic particle inspected to ensure that they are defect free. Sons of Liberty Gun Works is a custom rifle manufacturer in the United States that specializes on the AR-15 platform. They began producing purpose-built weapons for law enforcement and civilians alike and are given a lot of praise for focusing on the details that make an AR reliable. Function over form is what their rifles are known for and they are guaranteed to get the job done. From full rifles to individual parts, you can’t go wrong with SOLGW.


Technical Information

Barrel Twist



5.56 NATO / .223 Remington

Firearm Compatibility




4150 Chrome Moly Vanadium



Catalog Location

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 visit