This is described in the game as:

A Czech SMG with a high rate of fire

Importantly this is not to be confused with the Skorpion automatic handgun.

You’ll find this in Koani province, to the middle-right inside a Unidad Combat Outpost in the back corner.

I recommend sneaking in and out of the base, and only take out soldiers if absolutely necessary. There’s an open entrance in the fence at the rear of the base.

This SMG has a very high rate of fire, but handles it well. Consequently though, it’ll chew through a magazine of ammo very quickly. But it is a nice gun.

There’s a three round burst select fire option which may help conserve ammunition, and you can fit all SMG accessories to the gun.

It has a 20 round standard magazine, 30 round extended mag found in Media Luna.