C5 Gas System


Black Hole Weaponry introduces the newest revolution in specialized gas systems with the C5 (Caudle 5) gas system for 300 Blackout & 7.62×39 calibers. This custom gas system, available exclusively through Columbia River Arms falls between Pistol and Carbine gas systems


  • Eliminates gas tube fires from unburnt powder accumulation in the gas tube

  • Helps eliminate the need for specialized buffer weights & springs to “tune” cycling

  • Allows both  super and sub-sonic ammunition transition without having to swapping components

  • Seamless operation from 9.5”-18”

  • Comes with gas tube

  • Uses a common a gas block