Description
The Calico M951 is a select fire version of the nearly identical M900 Semi Auto Carbine, except the 951 has a special compensator (much like a mini Cutts Compensator) that is larger than the compensator for the M900. Like all 9mm Calico variants it uses roller-delayed blowback like the Heckler & Koch MP5, and has a downward-pointed ejection port forward of the trigger, resembling the magazine well