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 have RMR mount, if you want to fit it on to a G model slide, please also purchase TM-4952839149527