This is a Crimson Trace Corporation LaserGrip known as the Lasergrips, model LG-305.
LG-305 laser sights for the wildly popular Smith & Wesson J-Frame revolver line feature an extended grip length over the LG-405. Featuring a front activated laser that is engaged instinctively when the revolver is held in a natural shooting grip" the LG-305 is manufactured with a rubber overmold material over a polymer base and is among the most popular Crimson Trace(R) Lasergrips(R) applications.
Features:
Pressure activation
Red laser
Factory sighted at 50Ft
.5 inch diameter at 50 feet
