I dunno what it called, but May I suggest to ammo converter into context menu? so it become "Convert to...> [ammo type]" when we right click the ammo.

Why? cos on mods with a lot of ammo type *looking at brita* the right click context menu on ammo become very long downward, even more problematic for those who still play on 720p.

It also bury the "open ammo box" in between the selection of ammo.