From Kenny. He shot 6 rounds.

My hand doesn't hurt at all, but it that is NOT something I want to try again. I know I don't have exceptionally strong hands, but I was not able to fire a single shot through that gun where it did not break my grip at least a little bit. The closes thing I can relate it to would be a combination of the sensations received when one catches a fast ball bare handed and when I was a kid and accidentally held on to the black cat fire cracker too long and it went off in my hand. That thing is PUNISHING. It was lots of fun, no doubt about it, but in a very sadistic sort of way. I'm glad I got it all on video...