I wouldn't be worried about it except the fact that if I go ahead and start removing epoxy that is stuck to some parts of the gun, its going to leave even more bare metal. That allows rust and Im not up for that so I need to get this fixed. Ive considered sand blasting the inside of the action with a very fine sand and using picks to remove any thing that blasting wont remove. Im not sure if walnut shells or a fine abrasive like aluminum oxide or sand would work better. I dont want it shiny, but I dont want it to affect the action cycle either. Itd be nice to have a matte finish since the entire gun is that way. Then cold blue it repeatedly until the finish is nice and dark. Biggest concerns are action function and rust. Im not considering anything that is spray on because you cant really spray the inside of a action. Id say the best jobs are going to be something like a swab or dip type application. Eventually when I do the outside, I can just tape off the inside of the reciever, and do all the prep work and application for cerakote without worrying about the inside.