I found a source for S&W key lock replacement plugs. Basically replace the key lock with a plug to match your pistol finish and removing the internal locks. I need a minimum order of 10 to get started as a dealer. I have three accounted for, if any of you are interested in having the key lock removed either get ahold of me or stop by Alaska Custom firearms and talk to Steve or I. They come in 3 sizes J, K/L/N, and X frame, and stainless, black, or unfinished steel.
We have had several of the 329 and X series revolvers where the key lock will lock itself under recoil.