You could disarm someone with a gun in a real life situation.
I've had a real nikka tell me he did this when someone tried him in the hood.
Not everyone is built like that, though. shyt like this, where one guy beats up multiple dudes doesn't always work out, this only happens when faced against a group of pussies.
If they know what they're doing, you'll find your ass in a coma, no matter how tough you are
You can't disarm every guy with a gun if they know what they're doing. It depends on who has it pointed at you. Sometimes you won't be able to reach for it like "Get the fukk out of here," there are some guys who will just leave you right where you stand for even thinking about reaching.