From around the internet I've read Duracoat scrapes off easily on pistol barrel due to the slide grating into it. What would I need to make the slide and the frame, which are two different materials, the same shade? In some places I've noticed the slide will be a completely different shade due to the metal reacting differently. And if I don't have the brass to do it to my XDM, I'll probably pick up an XD Service at a gunshow nearby soon. I've only just become more lenient in what I will do to my firearm.