Tokyo Marui has 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 Tokyo Marui Micro Pro Sight Mount (TM-4952839149527) which essentially replaces the rear iron sights of your Marui G series pistol with a mini mounting rail, so that you can mount this scope onto it.

Includes: 

x1 Tokyo Marui Micro Pro Sight

*Batteries Not Included*