Crimson Trace Lg-637 Lasergrips Red Laser Sight Glock 17 22 Gen 3,4,5 Full Size Posted by admin On November 5, 2023 Filed under crimson FITS GLOCK THIRD GENERATION 17/17L/22/24/31/34/35/37, GEN4 17/22/31/34/35/37 AND GEN 5 17, 19X, 45 BEAM INTENSITY 5MW PEAK, 633NM, CLASS 3R RED LASER. 0.50 AT 50′.