I recently picked up an early L579 in .308 (Bofors, half-moon mag release, SN 16,XXX) and when I disassembled it to clean and inspect I found this "UN" mark in front of the "Made In Finland" mark on the LH side of the receiver below the stock line. Maybe a mark like this is common, but if so I haven't noticed it before. I doubt this is a rifle made especially for the United Nations, so can anyone clue me in on the significance of "UN"? BTW: This rifle also has the one piece magazine box/bottom metal, the two having been welded together and the magazine box being of somewhat heavier gauge than the usual stamped ones. I've seen a few of these, but they're very uncommon in my experience.