I bought a .223 Saiga but can't figure out how to disassemble it. The button to release the dust cover (number 1 in the attached image) will not go in. I assume I am doing something wrong but I don't know what, so any help would be appreciated. I have searched the web but have not been able to find a guide.
Also, can anyone tell me what the metal protrusion is in what is labeled as number 2 in the attached image?