Crimson Trace Glock 17, 19, 22, 20SF and 21 SF N/A Made in USA Made in America Instinctive Activation Class IIIR Laser Product: &lt;5mW power output 100 Lumen LED Light, Maximum Output Front Activation Pressure Pad One CR2Lithium Batter, Over 2 Hours of Illumination Can be paired with LG-617 or LG-619 rear activation laser Complete self defense system