I'm sure everyone loves shooting and so I bring you iGun. It's a Virtual Gun app with all the bells and whistles.

Two available guns are:
Gold Desert Eagle
9mm Pistol

How to use:
Tap the clip area to load new clip
Tap the trigger to shoot
Tap the top area of the gun to cock back
And of course click the gun button to switch weapon.

Always remember to put it up safely when not in use :-)