The grenade adapter could come in handy the way things are going in this country.
Except rifle grenades aren't used any more.
The Russian rifles are the best. They are well built, accurate, and are better finished than rifles from other countries. They are also harder to find, and more expensive when found.
The Yugo is actually very close in build quality to the Russian rifle, and this is apparent if you get to hold one next to say, a Chinese rifle. The Yugo rifle is much more "stout." My Yugo is also just as accurate as the late model Russian I had to sell. The down side of the Yugo is that it is not chrome lined, which isn't a problem with most stuff, but if you do find some corrosive ammo, you'll have to take care to throughly clean the rifle immediately after use. The Yugo is also heavier than rifles from other countries, due to its beefier construction, and longer because of the grenade launcher apparatus hanging off the end of the muzzle, which if nothing else, some find aesthetically displeasing.
The Chinese rifles are still solid weapons and have the advantage of chrome lined bores, like the Russian rifles, but in my experience, aren't as accurate as the Russian or Yugo rifles, and don't come across to me as being quite as well built. My brother has a nice Norinco carbine though that is light and handy, and we both enjoy it a lot.
The Albanian rifles are supposed to be good rifles as well, but are very rare and some of the parts aren't interchangeable.
I haven't seen many Romanian rifles around, and really haven't heard much of them, so I won't comment on their over all quality.