I got my slides cut for the rms-w and started wondering whether I would need a refinish. If it's stainless I won't... But having a hard time figuring out what they actually are. Glock's site says these are silver nPvd finishes but these look very much like a bead blasted stainless to me. All the nPvd finishes I've seen have been smoother to the touch. Bead blasted stainless has a particular feel to it. These slides feel just like that. The slides are magnetic...but so are other stainless objects I tried.