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 – there’s plenty of firepower in the Banshee upper. This upper receiver features a forged 7075-T6-AL M4 upper receiver assembly with a bolt carrier group, and a Cerakoted receiver and handguard. The Banshee is the right combination for you when concealment and portability matter the most.
The Radial Delayed Blowback (RDB) system was created from the ground up by CMMG to eliminate problems with traditional blowback systems found in pistol caliber AR-15’s. The biggest advantage of the RDB system is a gun that weighs less while simultaneously having less felt recoil. With a traditional blowback system, the only thing keeping the chamber closed is the weight of the bolt and action spring tension. As a result, the more powerful the cartridge is, the more weight is needed to keep the bolt closed long enough to safely operate. With the RDB system the bolt must be forced to rotate and unlock itself before it will cycle. This slows things down enough for chamber pressures to drop to safe levels ensuring reliable, and safe, operation without the need for heavy bolts or stiff action springs.
Features
- Forged 7075-T6 AL Upper Complete with BCG
- CMMG Zeroed Ambidextrous Charging Handle
- Radial Delayed Blowback system
Note: CMMG 9mm uppers work with standard AR15/Mk4 lowers and 9 AR Conversion Mags as well as a number of CMMG pistol magazine lowers: Mk9 (Colt-pattern mags), MkGs (Glock-pattern mags), Mk17 (Sig P320 mags)
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