I actually work across the street from Centerfire and picked one up yesterday. The one's that were in the shop, 12 to 15 of them were all 640-1. Most had the factory grips (Uncle Mike's) a few had pachmayr, said that they had one with wood grips that sold earlier in the morning . I looked through them all and picked what I thought showed the least wear and original grips. Can't wait to get to the range. I asked and they didn't know where/what department they came from. As usual most wear looked to be holster/carry wear.