CMMG Banshee 100 Mk4 22LR Complete AR-15 Upper Receiver Group - 4.5"

Manufactured by CMMG
SKU: 22B5B60
MPN: 22B5B60
Manufactured by CMMG
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Note: This upper has a barrel less than 16" in length and can only be attached to a registered SBR lower or pistol lower. Know your local laws and regulations.

The CMMG .22LR Banshee 100 MK4 Complete Upper Receiver Group features a 4140 chrome moly steel barrel with a medium taper profile for unrivaled performance. The barrel is threaded 1/2x28 with a forward blast diffuser muzzle device. The Banshee is a quality M4 style upper forged from 7075-T6 aluminum with a complete BCG and M-LOK handguard, making it a quality component for your firearm. CMMG is constantly looking for new ways to improve their products, processes and company at large. Their dedication quality control throughout their product lineup is second to none, and all of their rifles and firearms parts are made in the United States from the best materials available. CMMG guarantees its products against defects in material or workmanship for the life of the product. CMMG Inc. will repair, replace or substitute any product(s) if a defect in material or workmanship is found. Drop this complete upper on any Mil-Spec AR lower, throw in a .22lr magazine and you are ready to go.

  • 22LR
  • 1:16 twist
  • 4140 steel barrel with medium taper profile
  • Blast diffuser muzzle device
  • 1/2x28 thread
  • Forged 7075-T6 AL M4 type upper
  • Complete BCG
  • CMMG RML M-LOK handguard
  • Hard coat anodized receiver
  • Hard coat anodized handguard
  • CMMG Anti-Jamb 22LR charging handle

A leading manufacturer of AR-15 rifles, kits, and accessories, CMMG Inc. was established in 2002. Constantly pushing the edge, CMMG strives to develop and improve bringing you a product lineup that is second to none.
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Barrel ContourMedium Taper
Barrel Length4.5
Barrel Material4140 Chrome Moly Steel
Caliber Gauge.22 LR
Gas System TypeBlowback
Handguard7 in M-LOK Rail
Muzzle DeviceBlast Diverter
Twist Rate1:16
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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