Grant48, as already mentioned they are built from Romanian "G" parts kits, that alone puts them above the WASR/SAR rifles as the "G" parts are actual mil spec rifles before being cut up. as far as cosmoline you will never find an AK in cosmoline as only militsry rifles are preserved in it and no military issued AK can be imported as a complete rifle only as a parts kit. The WASR/SAR rifles are able to be imported intact only because they are not military AKMs have never been etc... they are built and imported strictly as a sporting rifle thats why they are not effected by the barrel ban.....
Even British L1A1s which were never fully automatic just semi auto have to be cutup and now minus barrels because they used to be military issued rifles which could be setup as selective fire...
The Yugo SKS is listed as a curio/relic this is the only reason it can be imported intact same goes for the WWI and WWII bolt guns, they are all covered in cosmoline cause that was how they were preserved for future military use.
Now, just so ya don't let a nice rifle slip by ya simply cause its still in cosmoline... which is how you want them to be as this is your best opertunity for the nicer rifles that do get imported here is a super simple almost hands off way to decosmo one, get ya a gallon of laquer thinner and a long container that can hold the rifle (I use a piece of 5" plastic sewer pipe with a cap glued on one end) place the rifle inside minus its bolt, now pour in the laquer thinner and put a cap on the other end, lay it on its side and allow to soak occasionally turning it from time to time, swishing it from side to side and end to end will clear the barrel, after about 30 minutes remove the rifle it should be 99% decosmolined even the wood. For ones that won't fit a tube I simply put em in a long plastic trough and let them soak, you can substitute mineral spirits but it takes longer, laquer thinner will leach the cosmoline outa the wood and disolves it on contact from the metal etc... after your done ya can save the laquer thinner easily, the cosmoline will settle to the bottom of your container just pour off the remaining thinner being careful to stop pouring when the cosmoline starts comming out...