G&G have shared details of their GT1 Dot Sight:
GT1 Red Dot
Accelerate target acquisition in short-range shooting environments with our GT1 Red Dot Sights. Tune in the precision with the elevation and windage adjustment knobs. Powered by a CR1620 battery and equipped with 11 brightness settings, the GT1 Red Dot Sight will lock on the enemy, day or night.Contact your local dealer for pricing and availability.
G&G