I was wondering whats that red switch for on your scope cover?

To pop open the cover.

Holy Crap ILLusion...I think I just creamed myself! LOL!!! That is a sweet piece of hardware! Great work, what's the fps?

Performance:
With hop-up adjusted to shoot KSC Perfect 0.25g BBs straight, a KSC Perfect 0.20g BB will chrony at around 387fps, +/-2fps

Yup, like Ronan said, a press of the button will release the scope cover. It makes things a bit easier by unifying the direction you press to open up the scope: Push the red button forward, and the rear scope cover pops backwards and up. Push the nub of the front scope cover forward as well, and it pops forwards and up.

With hop up off, it shoots about 400fps, +/-2fps

i.....hate......you....but......i......love......y our........gun

Goddammit ! Your EBR is... argh ! PTW !!! EBR !!! WOW !!! I want both !!!

Illusion, I must say, you have the nicest guns on this forum. Keep up the good work.

Nice Girl
must say what a beaut she is

I'd guess the small rail is to atach a backup sight, like a small Doctor red dot.
Or it could be there because otherwise, it would be lost space.

Not likely for a back-up sight as 1- Sight would be obstructed by the main rail/chassis and everything on it 2- The sight would be directly in line with your shoulder instead of your face. Most likely to be the second option, had space to put rails, so they did... hehe

oh man, where can i find a doctor's sight mount like that? i want to run almost the exact same dual-optics tier on my m4!