The Armasight CO-LR QS MG (Clip On – Long Range) is a night vision unit that mounts in front of an existing day scope and converts the day scope to night vision capability up to ranges of 1000 yards. Suitable for use with most commercial and military specification day time sights, telescopes or binoculars (up to 12X magnification), the CO-LR QS MG can be mounted/dismounted on a standard Picatinny rail in seconds and with no tools required. Because the CO-LR QS MG is mounted in front of your own day scope, the shooters eye relief is not altered and shot release and follow through all remain, no alteration in zero is experienced, so it really is as simple as mount-focus-shoot, just as in day time. The CO-LR QS MG is packed with innovative features like optional variable gain control, bright light shut-off, wireless remote control. This night vision clip on is designed to make long range night shooting just as easy and accurate as shooting over the same terrain during daylight hours with your day scope alone. Whether your day scope is a well known brand or not, the CO-LR will work just as well at magnifications anywhere from 3X to 12X. The manual gain control feature (MG) allows the user to increase or decrease image brightness for best possible contrast in any situation. The Armasight CO-LR QS MG is equipped with a high-performance Armasight Quick Silver White Phosphor Gen 2+ IIT with manual gain control providing a clear black and white image and resolution of 47-54 lp/mm.