MPN: 10B428D-AB


  • Radial Delayed Blowback System - softer recoil impulse and reduced bolt weight
  • Caliber: 10mm
  • Finish: Armor Black Cerakote
  • Upper Receiver: CMMG Mk10 Upper Receiver - 6061-T6 Aluminum
  • Handguard: 7-Inch CMMG EML7 Handguard
  • Muzzle Device: CMMG ZEROED Linear Compensator
  • Barrel: 8" 1:16 Salt Bath Nitrided 4140 Chrome Moly Steel
  • Muzzle Thread Pattern: 0.578"-28
  • Bolt Carrier Group: CMMG 10mm Bolt Carrier Group
  • Charging Handle: CMMG ZEROED AR15 Ambi Charging Handle
  • HP and MPI Tested

*This upper receiver assembly has a barrel that is shorter than 16". This upper is only for use on AR pistol lower receivers and NFA registered Short-Barreled Rifle (SBR) lower receivers. All NFA laws apply!


  • Weight: ~3.11 lbs.
  • Length: ~16.38"


  • CMMG 10mm MK10 lower receiver
  • Glock and SGM 10mm magazines


  • 1x CMMG Banshee 10mm 8" MK10 Complete Upper
  • 1x CMMG 10mm Bolt Carrier Group
  • 1x CMMG ZEROED AR15 Ambi Charging Handle


With excellent performance and ergonomics, the CMMG Banshee MK10 complete upper is perfect for your next PDW build. Chambered in 10mm, it can deliver a solid punch down range, and in this 8-inch barrel configuration, it makes for an incredibly effective home defense weapon.

One of the best things about the CMMG Banshee MK10 is that it uses a Radial Delayed Blowback system instead of the typical straight blowback. This allows it to have a much smoother recoil impulse, enabling you to shoot more accurately and quickly.

The barrel on this upper assembly is made from 4140 Chrome Moly Steel and has excellent corrosion resistance and durability. It is threaded and comes equipped with a CMMG ZEROED Linear Compensator, further decreasing the felt recoil. This upper assembly is equipped with a 7-inch aluminum handguard. The CMMG EML7 Handguard has M-LOK slots on both sides and the bottom, with small sections of Picatinny rail on the top for mounting sights.

The CMMG Mk10 receiver is made from 6061-T6 aluminum and comes equipped with CMMG ZEROED accessories like the ZEROED AR15 Polymer Dust Cover and an ambidextrous charging handle. This assembly also includes an HPT and MPI-tested CMMG bolt carrier group.

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