CMMG 5.7 8" AR15 PDW Pistol Upper Group Banshee 100 Mk57 5.7 x 28mm AR-15 AR57

Add this Lightweight CMMG 5.7x28mm Radial Delayed Blowback complete upper receiver to any existing AR15 lower to add this powerful cartridge to your arsenal!

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.

All BANSHEE 100 series uppers feature:

A2 Flash Hider

RML M-Lok Hand Guard

SBN Barrel

Standard Charging Handle

CMMG's Lifetime Quality Guarantee

CALIBER: 5.7x28mm

BARREL: 8” 1:9 Twist, Medium Taper 4140 SBN

MUZZLE: A2 Comp, threaded 1/2-28

GAS PORT LOCATION: N/A

RECEIVER: Forged 7075-T6 AL M4 type upper

HAND GUARD: CMMG RML7 M-Lok hand guard

FINISH: Hard Coat Anodized Receiver and Hand Guard

CHARGING HANDLE: CMMG Mil-Spec

WEIGHT: 2lbs 14.2oz

TOTAL LENGTH: 16.875"

CALIBER: 5.7x28mm

CAPACITY: 40 rounds

WEIGHT: 8oz(unloaded)