NEED HELP!!!

I am working on a VFC scar L. on the gearbox, there is a ambi selector switch that needs to be removed in order to take the gearbox apart.
the smallest allen key I have is .5mm and it is still too big. if you have something smaller than that can you please bring it to the field with you on the sniper course sunday so I can use it.

the smallest allen key I have is .5mm and it is still too big. if you have something smaller than that can you please bring it to the field with you on the sniper course sunday so I can use it.
