Replace angle of attack with artificial horizon in external view

sorry for the off-topic but why don’t I see the G indicator in the external HUD when flying certain planes? For example, the F-16 and FA-18 have it - so why doesn’t the Mig-29 have it? I can’t get my head around that… impossible to fly the Mig without a G indicator in external cam without breaking the plane!

I’ve tried all kinds of options. Nothing works. Is there a toggle in the cockpit for it? Because in the F-16, you have to enable speed in mach to see the mach number in external HUD.