How do I change the feats given by a class?

[Grethmic]

I hope this is the right thread and if not then I apologize.

I am playing a Gunslinger (archetype Bolt Ace) and having the gunsmithing free feat is kind of useless and the exotic weapon free feat (firearms) is also useless. My DM ruled that I could replace the gunsmithing feat with Rapid Reload and replace the exotic weapon feat (firearms) with hand crossbows. This leaves an extra feat open for me because I am playing a human.

My main question on this is there a way to remove feats that come with a class to make room for custom house rules like this?

[charlieluce]

You are in luck! ShadowChemosh has already created a version of the Bolt Ace like that, and you can access it by adding the Pathfinder Basic Pack from the Pathfinder Community Packs.