CMMG Resolute 100 Mk4 .22 Long Rifle AR-15 Upper Receiver 17″ %u200BFeatures:

The Resolute 100 Mk4 complete upper receiver assembly comes with everything you need to connect directly to an existing AR-15 lower receiver. This upper is designed to be compatible with Mil-spec pattern AR-15 lower receivers. Whether you like plinking for recreational shooting, need a reliable gun for varmint and pest control the Mk4 Resolute 100 complete upper receiver assembly from CMMG is the only upper you need!

CMMG Resolute 100 Mk4 .22 Long Rifle AR-15 Upper Receiver 17″ %u200BSpecifications:

  • CMMG Inc. Resolute Mk4 AR-15 Complete Upper Receiver Assembly 22B83BC
  • Blowback System
  • .22 Long Rifle
  • 17″ 4140 Chrome-moly barrel with Salt Bath Nitride Finish
  • Medium Taper Profile Barrel
  • 1:16″ Twist Rate
  • Threaded 1/2×28
  • CMMG A2 Muzzle Device
  • Forged 7075-T6 Aluminum Upper Receiver
  • Complete Bolt Carrier Group
  • CMMG RML15 M-LOK Free Float Hand Guard
  • CMMG Anti-Jamb .22 Long Rifle Charging Handle
  • Overall Length 24.8″
  • Overall Weight 4lbs 1oz
  • Made In The USA
  • Hard Coat Anodized Finish
  • Black
  • Fits: Mil-Spec pattern AR-15 Lower Receivers


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