I have already researched in this topic before but i just noticed it, the 50mm KwK39 doesnt use an APC shell as its primary shell, in fact it uses an APCBC, i dont really know why its named APC in both Enlisted and War Thunder, and how nobody ever noticed it, its normally shortened to APC due to the ballistic cap not being noticeable on such small 50mm rounds, i just thought a rename would be fitting 5 cm KwK 39 - Wikipedia