Since the mid 80's I've bought primarily automatics but have had a bug recently to buy revolvers again. Do Smith & Wesson revolver models just prior to the lock (keyhole next to the latch) have the firing pin on the hammer or are they like the lock models, specifically a 686? I was looking at a fairly new pre-lock 629 recently and although it does not have the lock, the firing pin is not on the hammer (where it belongs IMO) like on my early 90's and prior S&W revolvers. Anyway, thanks for the info.