This video clip shows how you can defend against and administer frontal gun attacks according to Krav Maga teachings for self defense training.

Gun attack is probably one of the worst nightmare that you can face. The simplest approach is to just give what the attacker wants and defuse the situation. Unfortunately the attacker may not be satisfied. It helps to know at least some way to act in such situation.

Note: I haven’t tested it personally and I hope I never have to.

Source: Youtube, so take it with a grain of salt.