we have a 'fats' that we use. the best training is to shoot live ammo. the 'fats' is just like a video game. it is not real. the best training is live ammo and walk thru type training with real guns. 'fats' training is a small part of your training (10%). you got to hear the bang, smell the powder, have gun control, etc... to have good training. "fats" is a video game.