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CMMG Barrel 16.1 M4 4140 Chrome Molly SBN 5.56

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″
    M4 Profile
    4140 Chrome Moly
    Salt Bath Nitride Finish inside and out
    1:7 Twist
    5.56×45 NATO Chamber
    Threaded 1/2-28
    Carbine length gas port
    .750″ Gas Journal
  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
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