I have an Ithaca Mag 10 done and it's holding up great!! I would have tho think that the way it is prepped determines how good it will hold up. A lot like some paints and such. I believe the gun should be totally apart and every part needs to be media blasted to rough the surface up a little so it "sticks" better. Just what I've heard from the guy that did mine. Like anything else, it's good when done right.
If I ask a question, I don't want your opinion. I want facts.
Don't tell me something you think, tell me something you know.
It's easier to say I don't know, than make something up.
Although, being a forum the next guy will know more no matter what.