I'm not a Glock fan, or even a fan of two-toned guns, but this Trigger Happy kit is superb. I did not have to do anything at all to it: no sanding, polishing, grinding, refinishing, etc. 10 minutes to drop in the internals into the new slide. I did not even have to add additional grease or lube. The finish is bead-blasted.
Price is going to be $120-130 for the entire kit(a damn good deal already), but good-guy pricing made it irresistible.