All owners of firearms should periodically check to determine if a manufacturer has issued a safety recall for their weapons.
Several years ago I inherited two handguns which, unknown to me, had been recalled - a Junior Pocket Colt .25 ACP and a 'Old-Model' Single-Six Ruger revolver.
A 'Firearms recalls' web search finds this very outdated listing of prior recalls.
Manufacturers Recall or Warning information
Manufacturer websites will also list specific recall notices.
Smith & Wesson Safety Recall
Ruger Safety Announcements