I was browsing through blendswap and I couldn't find a CZ Skorpion maschine-pistol that had sufficent depth and clarity, so, as is becoming a well established tradition, I set forth to model one myself.
Here it is.
This model was made for the opensource game Chaos-Esque Anthology, and is dual licensed under the CC-BY-SA 3.0 license and the Gnu GPL v2.
There is also a barrel shroud and 30 round magazine included.
Modeling time was 3 days.