CMMG 300 Blackout Barrel, 12.5″, 1:7 twist, Black (CMMG30D8A0A)


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

  • 12.5″
  • Multi Role Profile
  • 4140 Chrome Moly
  • Salt Bath Nitride Finish inside and out
  • 1:7 Twist
  • 300 AAC Blackout Chamber
  • Threaded 5/8-24
  • Pistol length gas port
  • .750 Gas Journal
Color/Finish Black/Salt Bath Nitride Finish
Materials 4140 CrMo
Size 12.5"
Caliber/Gauge 300 AAC Blackout
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