thats why I practic a lot so when i am robbing someone i don't have to press the gun against them!
there is a good place to stand away from a person when you are robbing them, not to close but not to far away, just out of knife stabbing or gun grabbing distance!
again practice-practice-practice my fellow felons!
The worst thing you could do with a gun is get too close and put it against their head. Great way to get it taken away from you. I've watched too many Krav Maga testings to feel comfortable doing that. Use the best advantage a gun gives you. Distance.