Bang, Bang. You are Dead!
Police officers have a hard enough time making split second decisions without the added complication that the realistic gun a kid is carrying may well be just a toy.
There have been several instances where children have been shot by mistake because law enforcement officers thought the toy gun they were carrying was real.
But on the other hand, the Police have on occasions, hesitated not being sure if the youngster is holding a real weapon or not and this has resulted in a loss of life. For example the water balloon firing gun made by the US company, Anstoy. It is virtually impossible to tell the difference between that and a real sub-machine gun.