absolutely not. thats a 6+1, and the extended mag (that can go in a G17/G19/G26) doesn't fit because the G43 is a single stack gun. and the other guns are double stack.
this is why the G43 is so much thinner and easier to conceal.
you'd need a single stack magazine in order to get more rounds in there. I have seen 8 round magazines, but I'm sure they have ones that are much larger. that doesn't interest me cuz they I cannot conceal it. 7 rounds is plenty for me. I don't anticipate being in a gunfight.