Tokyo Marui have released their own Micro Pro Sight which was made to fit the sight mount allowing the Red Dot to fit on the G series. It will also fit on any 20mm rail system so a vast array of products will allow it.
The screws at the rear, on top and on the right side, will allow the user to adjust the dot horizontally and vertically.
*This red dot does NOT Come with RMR mount
Length : 48mm
Weight : 16g
Battery type : CR2032