The GTL 21 and the GTL 22 are high-quality products that feature a red (visible) laser which can be zeroed for pinpoint accuracy. The laser functions either independently or in conjunction with the Xenon light. Light and laser are manipulated by a centrally placed mode-switch. All this is housed in a high-resistant polymer casing. The mounting mechanism allows the user to attach and detach the light in a few seconds without the need for any tools. A hard polymer storage case, a replacement bulb and an adjustment tool for the laser are included with this GLOCK Tactical light set. 
The GTL 22 additionally features a dimmer function, allowing the user to adjust the light intensity as required. 

Available GLOCK Tactical lights:

•  GTL 21
•  GTL 22