LG-637 Lasergrips are a rear-activated laser sight for GLOCK Full-Size pistols (Third Generation 17, 17L, 22, 24, 31, 34, 35, 37, Gen4 17, 22, 31, 34, 35, 37 and Gen5 17). Featuring Crimson Trace's famed Instinctive Activation, which allows the laser to...