Re: Coating the bolt
I have coated the bolts, leaving the lugs and bolt face the original blue or ss. I have done jeweled bolts with Kg and have had good results. It will wear, but only in the areas where the races rub the bolt. I throw a very thin coat of oil on the bolt to aid in lubricity and have not had any problems.
Remember preperation of the surface is the most important part of the process. Cover any areas you do not want to blast,(lugs, bolt face) blast it, clean it really good, clean it again, then apply the KG in your color and bake.
Good luck with it.
Robb