I don’t know if I’m understanding. You say you haven’t had the BCG slam forward during a time when it is not supposed to slam forward, and that’s the Bain of your existence? Are you troubled because it functions as designed, or is there something more to it?
edit to add:
I’m not familiar with the 716, so maybe the mag is supposed to release the bolt on that one when inserted? It sounds like that’s what your after. Are you wanting the bolt to release when you insert the mag? On most rifles it is not supposed to. To have to press the bolt release to send the bcg forward. It’s early, forgive me if I’m misreading something.