Salvo,

Be it for me to know on this, I just did my first build and will use it as a single shot for a bit until I sort out magazine issues .......... mine is a 7mm Rem Mag to a .25-06 .......

But it's only logical that a detachable magazine would offer you a one click conversion vs. a bunch of other parts changing ........... but that I believe is your question?

Three 44s