I'm in the market for a S&W .357, most likely a 686 Plus in 3 or 4 inch. I'm seeing lots of posts on Gun Broker, etc. with the "pre-lock" notation. Not knowing the specific history on this, my brief research found this good article on the subject. As suspected, it was a company response to appease the anti-gun crowd. I guess if one was inclined to leave a loaded gun around or an unloaded gun with ammo in plain sight, having the lock does add a back-up level of safety... but that presumes the ding-dong who leaves loaded guns around remembers to use the trigger lock. http://www.luckygunner.com/lounge/smith-and-wesson-internal-lock/ What is your opinion on trigger locks? Have you avoided purchase of S&W revolvers that have them? Aside from the aesthetics and any possible malfunction they might introduce (which sounds like a non-issue?), not sure it would drive what gun I buy, but curious what others think. (Please see my thread in Handgun forum -- soliciting advice on which model...help me spend my money ).