The CMMG Banshee MkG .45 ACP is a pistol-caliber carbine (PCC) / AR-pattern firearm chambered in .45 ACP. Exact specifications vary by generation and barrel length (5", 8", etc.), but the common MkG configuration includes: Core Specifications Specification Details Caliber .45 ACP Operating System Radial Delayed Blowback Platform AR-pattern PCC Magazine Compatibility Glock-pattern .45 ACP magazines Barrel Lengths Commonly 5" or 8" Thread Pattern .578x28 Receiver Forged 7075-T6 aluminum upper, billet 7075-T6 aluminum lower Handguard CMMG RML series free-float handguard Trigger Mil-spec single-stage Controls Ambidextrous safety and charging handle (varies by model) Weight Approximately 4.7 lb (5" model) Overall Length About 20" with brace collapsed (5" model) Notable Features Radial Delayed Blowback (RDB) system reduces felt recoil compared with traditional straight-blowback PCCs. Uses widely available Glock 21-pattern .45 ACP magazines. .45 ACP is naturally subsonic with common 230-grain loads, making it popular for suppressed use. Available as pistol, SBR, and carbine configurations depending on model year and local laws. Typical 5" Banshee MkG Configuration 5" 4140 chrome-moly barrel Glock-compatible 13-round magazine included from factory Weight: ~4.7 lb Threaded muzzle (.578x28) Free-float handguard AR-style controls and ergonomics User Feedback Owners often praise the Banshee for: Soft recoil compared to other .45 ACP PCCs Compact size Suppressor compatibility Magazine commonality with Glock pistols Some users have reported reliability, ejector, or wear issues on older models, while newer fixed-ejector versions introduced in 2025 were intended to address some of those concerns. Community reports remain mixed depending on configuration and ammunition used. (1)24 RND MAG (1)Sight Mark Red Dot