I built out one of their G21 RMR cut slides to switch out on my G20. No issues over the last 18 months or so, but not a lot of heavy use on it. Maybe 500 rounds total. I’d buy again.
Kit received and built. I also ordered a Zev spring kit and a metal guide rod. The kit came with a plastic one. I polished the friction points and must say, I am very happy with the finished product. Havent shot it yet but everything i can check at home, checks good. Trigger breaks clean at about 5#s.