The Ultimax 100 and Stechkin are very rare in movieland.
Come to think of it, not too terrifically common outside movieland, either.
The Stechkin has truly an amazing reputation when you consider it was made for only what? Four or five years? They only made a couple of thousand, to boot; an insignificant number for a Russian gun.
Yet like all machine pistols (think Mauser
Schnellfeure, VP-70z, Beretta 93R, Glock 18), it sure has burrowed its way into the collective subconscious of the gun world. I sure wouldn't kick any of the above-named machine pistols out of my gun safe (although just what use they'd be is beyond me...)