It may fit as long as your handgun matches the following fit information provided by Crimson Trace:
"Fits Smith & Wesson® Airlight, Airweight, Bodyguard (except polymer-framed models), Chief’s Special, Centennial, Ladysmith, Models 36, 37, 38, 49, 60, 63, 317, 331, 332, 337, 340, 342, 351, 360, 442, 637, 638, 640, 642, 649, 651 and 940. Round butt only. Fits Taurus Small Frame Revolvers (85*, 94, 605, 650, 651, 731, 850, 851, 856, 905, 941) Does not fit Taurus Small Frame Revolvers with Polymer Frame). *Does NOT fit Taurus 85 models manufactured after 2014."