Check K-Var, also in Vegas, alleged to be Arsenal's biggest dealer / re-manufacturer.
Website is k-bar.com.
Atlantic has lots of AK-style arms, but I'm not sure if they have a showroom.
In the Chicago area (Kane County), GAT Guns is a big place & usually has a dozen or so new& used AK-style weapons. They're located about a mile North of I90 (to Rockford from Chicago) on RT25 . They now have a large lot you can "probably" park an 18 while you shop and still turn around to get out. Check their site and call them to confirm parking ...