Out of my personal collection.
I've never DuraCoated a Glock frame before. I've done polymer plenty of times, but every company has a slightly different blend on their poly.
I was also surprised how easy it was to completely disassemble the Glock (slide, frame, and sights) - leaves me scratching my head on people who buy the "glock tool". I also am left wondering how hard is the official Glock Armorer course, considering I did everything with common garage hand tools without damaging or scratching anything.