Dude magitech models look realistic, these make no sense, I've shot a gun before, and I know that it would probably damage that guys arm when he fired.
I remember back when I was 10, I shot an ak-47, dude I could barely lift the thing, and when I fired it I almost fell over backwards, then I put it on a bench and it was much easier, I mean, Chris(my mom's boyfriend) who brought me, told me to have to the gun stock hard against my shoulder, so the gun woudn't go flying outta my hands!
You would understand if you fired a gun Omega. You see people in the movies and stuff running and shooting, for one, they're well prepared for it so they make it look good, they do that scene multiple times, and he doesn't fire a bullet, so he doesn't get as much kick when he fires.