In my view, the M10, previously known as the Military & Police, is one of the best designed and balanced revolvers ever made. Like most revolvers, it points naturally, which is something self-loaders do not do (they point low). I'm speaking of point shooting, not aiming.
I have two WWII M&P Victory revolvers, one in .38 Special, the other .38 S&W, and use them for informal plinking. If I were to use one for personal defense, it would require new stocks, since the grip frame is much too small for my hand.
I'd question the seller carefully about wear - end play and rotational play at lockup.
JT