As the originator of the "other" thread, I have purchased quite a few recent manufactured S&W revolvers that are great, Normallt I purchased from a local gun shop where i can inspect the firearm, in the case of my 929 I purchased it from an out of state distributor and could not inspect it before purchase. If your local GS will allow you to properly inspect the gun here are a few tips.
Take six empty resized cases all the same brand with you, load them in the cylinder and check the timing by slowly pulling the trigger and look to make certian the cylinder bolt locks up before the hammer falls, I normally put a slight drag on the cyllinder by resting my thumb against it. Also take a set of feeler gauges with you and check the gap between the empty case and the firing pin recoil shield .007 inches is perfect and .012 is acceptable, check this for each cylinder, they shoild all be within .002 inches. Next check the gap between the barrel and cylinder .003 is good .04 is ideal and anything over .008 is too much, you should check both sides as some of the newer guns have as much as .005 differnce, this is definately not good. Next do a visual inspectiion are their any mars in the finish, does the barrel look line it is on straight, If everything checks out chances are you will not have any problems witht he gun, I see the GS have 10 in stock check as many as you can untill you find the one you like best,
Same problem with timing. 5 cylinders in time 3 out.
Terrible for something that came out of the custom shop.