Brownells 75th Anniversary - A Shooting Heritage
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CMMG delivers its lightest and most compact firearms within the BANSHEE line of Short Barreled Rifles (SBR’s) and AR pistols. Don’t let these little guys fool you though. With a wide range of caliber offerings available, there’s plenty of firepower in the BANSHEE line. With a variety of different barrel lengths and furniture to choose from, the BANSHEE 100, BANSHEE 200 and BANSHEE 300 series will have the right combination for you when concealment and portability matter the most.

  • CALIBER: 5.7x28mm
  • BARREL: 8” 1:9 Twist, Medium Taper 4140 SBN
  • MUZZLE: A2 Comp, threaded 1/2-28
  • RECEIVER: Forged 7075-T6 AL M4 type upper. Complete with BCG
  • HAND GUARD: CMMG RML7 M-Lok hand guard
  • FINISH: Hard Coat Anodized Receiver and Hand Guard (Can be upgraded to Cerakote)
  • CHARGING HANDLE: CMMG Mil-Spec
  • WEIGHT: 2lbs 15oz
  • LENGTH: 16.9

CMMG - AR-15 MK57 BANSHEE 100 UPPER RECEIVER 5.7X28MM

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Cartridge: 5.7 x 28 mm

Finish: Black

Style: Complete

Contour: Medium

Length: 16.9"

Muzzle: 1/2-28, ...

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