The Calico M960A is an American selective fully automatic

submachine gun A submachine gun (SMG) is a magazine-fed, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an autom ...

(SMG) based on the

Calico M950 The Calico M950 is a pistol manufactured by Calico Light Weapons Systems in the United States. Its main feature, along with all the other guns of the Calico system, is to feed from a proprietary helical magazine mounted on top, available in 50 or ...

with the addition of an extending butt and a forward grip. It is chambered for the 9×19mm Luger which takes 50-round or 100-round

helical magazine A magazine is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges with ...

which fits on top of the rear of the receiver. The M960A was first produced in 1990, and its

rate of fire Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. This can be influenced by several factors, including operator training level, mechanical limitations, ammunition availability, and weapon condition. In m ...

is 750 rpm.

References

9mm Parabellum submachine guns Roller-delayed blowback firearms Submachine guns of the United States Trial and research firearms of the United States {{Submachinegun-stub