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CMMG 16.1" MR Barrel 300 ACC Blackout

CMMG

Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.

  • 16.1″
  • Multi Role Profile
  • 4140 Chrome Moly
  • Salt Bath Nitride Finish inside and out
  • 1:7 Twist
  • 300 AAC Blackout Chamber
  • Threaded 5/8-24
  • Carbine length gas port
  • .750″ Gas Journal

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