Crimson Trace Lasergrips for Glock full size gen 3-models G17, G17L, G22, G24, G31, G34, G35, Ge7, Gen 4-models G17, G22, G31, G34, G35 & G37, Gen 5 models G17, G19x, G34. Green laser (more visible during daylight hours). Instinctive Activation – rear. Batteries each year for free. Battery life 2 hours. Factory adjusted for 50 feet. User adjustment windage & elevation. Get your Crimson Trace green laser for your Glock today!