Ultra lightweight & compact, the TLR-7 A CONTOUR REMOTE Weapon-Mounted Tactical Light features the latest in LED technology for high lumen operation and provides 1.5 hours of continuous runtime from a single lithium battery. 500 lumen output delivers a powerful beam with extensive range, good peripheral coverage and selectable strobe mode. The TLR-7A CONTOUR REMOTE includes rear switches for ambidextrous support-hand controls in addition to a remote switch that activates naturally when taking a firing grip. This unit is compatible with most Gen4 and Gen5 railed GLOCK handguns.