Woohoo! :D Congratulations! :D How do you feel?
I don't have any of my piercings right now (due to a series of unfortunate events :P ). I will be getting my ears, nose, and tongue re done for sure.
Rather, the gun forces the jewelry through the ear. Since jewelry is not sharp enough to pierce anything really. Guns are pretty notorious for harbouring infections. Most of which are made of plastic and cannot be properly cleaned with an autoclave.