The CETME C2 (also named the CB-64,) is a Spanish submachine gun based on the British Sterling L2A3.

The C2 has three modes of firing: Seguro (safe,) Tiro (Semi-Automatic,) & Ráfaga (full auto.

[6] In the late 1950s, the Spanish's most used sub-machine gun, the Star Z-45 which had been designed in World War II, had become obsolete compared to modern firearms of the time.

The CETME C2 was produced in limited numbers as Spain had already ordered sub-machine guns from Star.

[6] The CETME C2 stopped production in the 1970s being replaced by the Star Z-84 &, more dominantly, the generation three German Heckler & Koch MP5.