It's probably Mitchell Arms which imported a lookalike AK and AR from Italy.
Along a more expensive vein though, the advantage of a dedicated 22LR AR upper includes: no gas tube to foul with leading; smaller bore diameter (.221 instead of .224) for better fit, slower twist (1-7" to 1-10" are way too fast). The consequences of the latter two is that the 40 grain lead bullet gets deformed as it bounces down through the barrel. There is no accuracy to speak of. Thus, it is far better to have a .22 upper if you chose to go that route.
Accuracy Speaks makes a dedicated .22 upper as does Olympic Arms, Victor Arms and Leitner Wise. They can cost anywhere from $700 (Accuracy Speaks to $400 Victor Arms). Check out this thread for more info:
[This message has been edited by 4V50 Gary (edited March 13, 2000).]