Playing an offline campaign featuring Ki-43 early war operations, noticed how it was set as first version armed with two 7.7 mm machine guns. Unfortunately, these latters are totally ineffective against Buffalo's and this affects significantly playability, but also realism, as I'll try to explain.
Thanks to kindness of a japanese friend, I was helped to put some order in available data, sometimes contradictory and seldom definitely wrong.
First of all "Itsu Sen" was armed with Type 89 machine gun and not, as listed by some source, Type 97, which belonged to Navy and was in use on A6M and absolutely not Type 99, that was an Army gas type, although all of the same calibre.
Second but main point, since beginning of its operational use, "Yo San" was armed with two 12.7 mm Ho-103; then, either because this latter weapon had tendency to jam, or because its synchronized rate of fire was too poor (depending on source) and exploiting complete interchangeability of the two types, one heavy MG was always replaced by one 7.7 mm as a backup or to add punch.
Would be nice if in occasion of revision or making a new campaign involving "Oscar", authors would consider this point.
Ardisco, colpisco, meninfischio ("I dare, hit and do not care about it!" - Written on a SM 79 "Sparviero" during Spain civil war)