HI red, I've been using the Kobra red dots for around 15 years and have had zero problems. I've read some real bad posts about them, but I like mine. They are also my favorite red dot to use with the AR-15's. I bought mine thru Kalinkas optic whse, don't know if they still carry them or not?
Break out the flames guys! -- My favorite mod to the AKs is the Fiberforce thumbhole stock. I like the longer length of pull and cheek weld they give ya. The rifle seems to handle better for me and these stocks are tougher than owl crap! Forget about the forearms that come with them, they are junk, never fit quite right, but I sure do like the stocks!!
This is just what works for me, kinda old school, don't know if I would recommend them for anybody else? gotta go with what ya like! Good luck with your project! Ken