5.56 M4 16-Inch Barrel

5.56 M4 16-Inch Barrel

The 5.56 M4 16-Inch Barrel is a military-spec barrel for the M4. This barrel is 16" long and is constructed from 4150 CrMoV steel. There is a military-spec 86L20 case hardened M4 extension installed.
SKU 556-M4-16

Description / 5.56 M4 16-Inch Barrel

The 16-inch M4 profile variant of the AR15 is the most popular version of the AR15. We now have these barrels in stock for you to build out your own custom version of this legendary rifle.

Features:
  • 16" Barrel - Made from 4150 CrMoV Steel
  • Mil-Spec 86L20 Case Hardened M4 Extension
  • 1/7 Twist Rate
  • Carbine Length Gas Port
  • Nitride Finish w/ ITW Extension
  • Marked 5.56 1:7
  • M4 Profile

More Information

Manufacturer United Defense LLC
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