Pair this 12.5” 5.56mm BANSHEE™ upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like ballistic performance. Available in different Cerakote finishes, all CMMG® Upper Groups come complete with bolt carrier group and ZEROED ambi charging handle.
| Platform | Mk4 |
| Caliber | 5.56x45mm |
| Operating System | Direct Impingement |
| Barrel Length | 12.5 |
| Barrel Twist | 1:7 |
| Barrel Contour | MR |
| Barrel Material | 4140CM, SBN |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | Carbine |
| Gas Block | Adjustable 0.750" |
| Upper Receiver | Billet 6061 T6 Aluminum |
| Hand Guard | CMMG EML11 M-LOK |
| Finish | Cerakote Standard |
| Charging Handle | CMMG ZEROED Ambi |
| Weight | 3.8 lbs |
| Length | 20.8" |
