This is a Crimson Trace Corporation LaserGrip known as the Lasergrips, model LG-207.
LG-207 laser sights for Smith & Wesson K" L & N-Frame revolvers feature a hard polymer material that provides ideal grip security for large caliber revolvers. The laser activation switch is located in front" making activation "instinctive" when you assume a normal firing grip on the revolver.
Features:
Pressure activation
Red laser
Factory sighted at 50Ft
.5 inch diameter at 50 feet
