it's not an EOTech... but still...
http://www.airsoftcanada.com/showthread.php?t=46141
Actually I try to get a hold of a flat top...
And I have to swap a lot of parts for CQB setup (outdoors: 36KE outter, 550mm inner and 200mm Silencer, 3-9x40 scope... CQB: G36K barrel + flashhider, Aimpoint)