Quite a few of our 3 gunners have experienced FTE problems with a side mount and eo tech....
apparently, the extracting round will bounce off of the sight back into the chamber...
http://forum.saiga-12.com/index.php?showtopic=28937&hl=
My vote would be for a Dinzag press on block with an AK Iron dot....
Sieriously.... it's STILL a shotgun..... you don't need an optic.... Irons are fine...
with this set up.... you can still use Irons and co witness with the dot....
Edit: I run an EoTech 552 w/ a Chaos quad on my Red Jacket....
Optic sits unnaturally high IM