It's a Robinson VEPR K 7.62x39. When I got it, I was considering it as a pig gun. I've had it for some time. I'm pretty sure it will outlast me. I don't think Robinson imports them any more, though, but if you can find one with a low round count, it's awful hard to fuck up.
You can still bore sight an AK (i'm assuming this is your just-procured Saiga), but it's a little tricky. Most people who don't want to waste their time will buy a laser.
Try this if you go the laser route. I do it with a dental mirror, and just find a light or a stop sign or something else conspicuous. I don't know if you have the irons sighted in already or if your scope mount covers the irons or not, but if it's a side mount and you're sighted in on the irons, you can also simply compare the picture you see over the irons and through your scope. It will give you enough to get on paper and you can walk it in from there.
If this isn't your Saiga and you're asking me how to sight in a bolt rifle or an AR... just pull the damn bolt and tell me you're asking about your Saiga anyway so that I don't lose any respect for you.