Another ex LE second gen to get the Scotchbrite & beadblast treatment, this time a model 639 that I bought years ago as a police dept. trade in locally, and carried off-duty for a long time (during the cold season). I had replaced the original ambi safety with a third gen, but since I only had these NOS smooth grips to put on it, I installed a single sided safety, just didn't have the guts to cut the right grip panel....I'll have to keep looking for a correct set....