I've ordered three rifles from them in the past year or so (Mosin, SKS, AK) and have no complaints other than their website wouldn't tell me what shipping was going to be, and I didn't get any e-mail updates when the order was shipped or the tracking numbers as most (all?) other places do.
This was before they upgraded the software, so maybe now it's better. The shipping turned out to be reasonable each time but it was almost a deal killer the first time I ordered, as I don't like "trusting" an on-line vendor not to gouge me on shipping charges.
fyi to ClassicFirearms: where I work Facebook/Twitter are monitored or blocked at least as much, if not more so, than "firearms" suspected sites.