https://midstatefirearms.com/product/16-mid-length-5-56-nato-17-4150-ar15-barrel/

shipping available

  • 16″ M4 Contour Barrel
  • 5.56 NATO chamber (shoots both 5.56 and .223)
  • 4150 CMV Chrome Moly Steel
  • 1/2-28 Threads
  • Mid length gas
  • m4 feed ramps 
  • .750 diameter at gas block. 
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