For a bit of a fun project over Christmas (and because I wanted an airsoft SKS, since I like Russian and Chinese weapons), I just bought a cheap springer Yika 56 for 24 quid from bbguns4less. The Yika 56 is essentially a Simonov SKS45/Chinese Type 56 without the folding bayonet. Although on the few of the reviews I've seen of this thing, people seem to imagine it is some kind of M14, rather than the predecessor of the AK.
As was the case with my cheap ass AK12 which I souped up, I'm going to stick a decent AEG gearbox in the Yika 56 so it be more reliable and will also work as an semi auto, as the real SKS does, and then i might try and soup it up a bit to have it as a more practical Eastern Bloc DMR than the SVD, which as much as I like it, is a big ass gun to lug around, whereas an SKS carbine is a more practical proposition for that kind of running about malarkey.
Interestingly, ordering this was once again an example of a BB gun website getting a bad rap, but actually demonstrating good service. Not long after ordering the thing (which was listed on the site as being the last one in stock), I got a call on my mobile from them saying they didn't actually have any in stock and wanted to refund my money, but then the guy said 'actually, hold on, I think I can see one on the shelf, gimme a sec, I'll check' and sure enough he did have one in stock, so came back on the blower and said he'd get it in the mail to me. So, there's a BB gun site which was happy to refund when they thought they needed to, and quick to get in touch when they thought there was a problem with the order, and on the ball enough to spot something sat on a shelf a long way off which might sort the problem! As ever, a caveat to BB gun sites, and ordering from them, is that you'd better be cherry picking the gems from much of the less than brilliant stuff they sell, but if you know what you want, they can be a decent place to buy from.