I recently enquired about a CZ 452 American being advertised on Used Guns. The metal parts on this rifle were refinished with graphite black Cerakote by a gunsmith, including the bolt. The seller said that the bolt had also been treated with Micro Slick. Could the Cerakote still come off the bolt from sliding it back and forth as you're working it?
As an aside, how worthwhile is it to get a Cerakote job done on your firearm if its current coating is not in dire need of repair, and you're not after some wild colour scheme?