CMMG: Banshee Mk4 Pistol, 300 BLK, 8" Sniper Grey

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Compact and capable, .300 BLK was designed to be right at home in AR15-pattern firearms like the CMMG® Mk4 platform. Originally created for optimum performance in subsonic, suppressed, and short-barrel applications, .300 BLK, in supersonic ammo loadings, has evolved into a popular competitor to other intermediate cartridges like 7.62x39. No matter what the application is, this BANSHEE™ is built to fit the bill.



  • ZEROED Pistol Grip

  • ZEROED Trigger Guard
  • ZEROED 60°/90° Ambi Safety
  • ZEROED AR15 Ambi Charging Handle
  • ZEROED Ambi Mag Catch
  • ZEROED Extended Mag Release Button
  • ZEROED AR15 Bolt Catch
  • ZEROED AR15 Polymer Dust Cover
  • ZEROED Linear Compensator 308 Win



  • Caliber: .300 BLK
  • Barrel Length: 8"
  • Twist Rate: 1-7"
  • Thread Pitch: 5/8x24
  • Gas System: Direct Impingement
  • Weight: 5.1 lbs
  • Length: 23.7”


  U.S. Government Export Restriction

This item is restricted for export by the State Department and Department of Commerce. Make sure that you are familiar with all applicable laws.  ITAR Information.




FFL Requirements & Magazine Restrictions

This item has to ship to an FFL. Please read the attached information. Shipping Rules & Magazine Restrictions.





.300 Blackout
8 inch