For those of us who are interested in the 586, this part of the history might be of interest. From Wikipedia:
"In 1987, seven years after the release of the Model 586, there were reports of cylinder binding with some types of standard .357 Magnum ammunition for L-frame revolvers manufactured before August 1987. S&W put out a product warning and authorized a no-charge upgrade to make modifications to all 586, 586-1, 686, 686-1, and 686CS-1 revolvers."
If there is a letter "M" next to the engraved serial number does this mean the recall work was done?