If you want to get your slide refinished with something that is ultra durable get an IonBond Diamond Black finish. That is hands down the most durable wear and scratch resistant gun coating on the market. Many competition shooters use that finish on their guns with great success. Kydex holsters can usually destroy most common gun finishes in only a few hundred draws. I have seen IonBond guns with thousands of Kydex holster draws on them along with hard range use and they still look brand new.