I need help cause I am trying to make weapons for some of my Mocs I need some gun designs 

help please

You could check the MOCing Advice & Ideas thread, or the MOC index. But please note that most of those threads haven't had a new message in months, if not years, so you probably wouldn't get an answer if you ask builders how they did a certain part of their MOCs.

Hey you have been really helpful during the last few days so thank you