I had to do a search to see what the thing was. It looks like a gas gun, and the video I saw, showed the guy loading the double barrel with what looked like a very large cartridge...not much smaller than a gas grenade. When we had to qualify at the range each year, we had to shoot the department's gas gun, and we were always told to aim low, because gas rises. The video I watched showed the guy shooting it directly at the torso of first, a target, then at two humans. The language is foreign. I'm assuming .FI is Finland? Here's the link to the YouTube video if anyone is interested:
Hey! You can’t discuss things rationally like that, you have to call me a name.