Add existing gadget to a different class

Hi all, I’m looking to make a small modification so that I can use gadgets on different classes to the ones they are on by default, e.g. C4 for recon class, etc., and to make carbines and DMRs universal to all classes, like in BF4.
This would be for use on a private server playing against bots.
Any advice on where to start would be greatly appreciated :slight_smile: