Crimson trace offers lasergrips to fit s&w's hog hunter style revolvers with a round butt.These grips have a comfortable rubber overmold grip to provide ideal comfort and security for large caliber revolvers.Features front instinctive activation during a normal firing grip; fully-adjustable windage and elevation and a master on/off switch.Lg-307 fits s&w models 10 thru 19, 48, 53, 56, 64 thru 68, 242, 296, 547, 581, 586, 617, 647, 648, 686, 696.Power Switch: Pressure PadWavelength: 633nMDot Size: .50" @ 50 ydsPower: 5mWRange: 50 ftWeight: