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CMMG Banshee Fixed Ejector MKGS GEN II + Brace

*** This is the most recent version of the Banshee MKGS in 2025. This radial delayed blowback 9mm has Glock compatible magazines and has a fixed ejector. ***

Built with a 5” nitride-finished barrel this BANSHEE™ chambered in 9mm is among the shortest, most compact ARs CMMG® has to offer. Capitalizing on our reputation for innovation, the MkGs platform uses the always popular 9mm double stack Glock-pattern magazines.
 

Available in a range of cerakote finishes, the BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE®, to the stylized receivers and EML™ handguards, every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. New EML4 handguards feature M-LOK® slots at 3, 6, & 9 o’clock positions and a full length picatinny top rail for accessories as well as an integrated handstop.

Radial Delayed Blowback™ Operating System

Originally developed for the .45 ACP MkG platform, CMMG has adapted our Radial Delayed Blowback system across our pistol caliber lineup to create pistols and rifles with a softer recoil impulse and reduced bolt weight compared to traditional straight blowback systems. Check out our CMMG Resources article & video to learn more about what sets Radial Delayed Blowback apart.

RDB was an advancement from straight blowback. Compact action RDB was an advancement to the original RDB. This (fixed ejector on RDB) is a continued advancement bringing new technologies to the original platform