This was a pistol.. you might not notice the kick much on a rifle set into your shoulder but compared to a 9mm handgun this was a hell of a lot more of a kick.

Edit: I just tried to find a picture of what I tried.. its been a few years and I can't find an example online with a cursory look but there was no stock at all, stubby mag, stubby barrel, no foregrip but the guy was going to add one.