No I didn't just come up with it. That was a real noobtube nazi weapon.
If you want something fast law-firing, just edit the BulletStyle from 14 to 11 or 4 in the weapons config file, also the fire interval to a bit slower. And for visual effect - you can always modify the way the stat gun looks.
(No new weapons to be added in Soldat, not that I didn't read your post)