How to remove stuck bullets?

It depends on exactly what you mean. If you fired a round in a gun and the actual projectile is stuck in the barrel, you should take the gun to a gunsmith and have him tap the bullet out using the correct tools. If you are having malfuctions such as a double feed, simply go to a reputable gun shop or gun range and ask someone to show you how to clear the malfunction. Take the gun in to the shop in a gun case of some kind, and tell the person what you need, and be sure to tell them the gun is loaded and a round is stuck. Don't just walk in with a gun in your hand.