The CMMG Banshee Mk4 SBR packs 5.56 NATO into a short, direct impingement rifle with a 10.50" 4140CM SBN barrel, MT contour and a 1:7 twist. An adjustable .750" gas block lets you tune the carbine-length gas system for suppressed or unsuppressed shooting, and a CMMG ZEROED linear compensator on 1/2-28 threads pushes blast forward, away from the shooter.
A billet 6061 T6 upper with a CMMG EML9 M-LOK handguard sits on a forged 7075 T6 Mk4 lower, and ZEROED parts handle the controls: ambidextrous charging handle, 60/90-degree safety selector, drop-in trigger and pistol grip. A B5 Systems Bravo stock rides a six-position Fastback extension with an ambidextrous sling plate, and the FDE Cerakote finish ties it together. It ships with one CMMG 30-round magazine and transfers as an NFA short barrel rifle.
- Brand: CMMG
- Model: Banshee Mk4
- Caliber: 5.56 NATO
- Barrel Length: 10.50", 1:7 Twist, 1/2-28 Thread
- Capacity: 30 Rds, 1 Magazine Included
- Action: Semi-Automatic, Direct Impingement
- Stock: B5 Systems Bravo
| __Action | Semi-Automatic |
| __Caliber | 5.56 NATO |
| __Optic Footprint | Picatinny Rail |
| __Capacity | 30 |
| __Barrel Length | 10.50" |
| __Model | Banshee Mk4 |
| __Twist Rate | 1:7 |
| __Firearm Type | Rifle |
| __Barrel Type | Threaded |
