Ruger has issued a recall for a potentially small number of Ruger 57 pistols. The issue surrounds the right side safety lever, which apparently may visually appear to be engaged, but not actually be engaged. Here is a link to the inspection procedure, which you really should be doing regularly anyway.
My pistol was within the recall serial number range, but function checks perfectly. Love that thing . . .
Ruger-57™ Safety Bulletin
My pistol was within the recall serial number range, but function checks perfectly. Love that thing . . .
Ruger-57™ Safety Bulletin