A free program for Android, by Creative Weapons.

Gun Simulator is a free app for Android phones and tablets that lets you play as a gangster or a super detective. With this, you will have to use your phone to simulate the action of a gun. 

You can choose from a variety of weapons, such as a pistol, a shotgun, a revolver, a rifle, and an assault rifle. You can also choose from different sounds and vibration. The simulation will be activated by your movement, just like in a real gun simulator. 

The goal is to shoot the target. To do that, you will have to move your phone to simulate the target.