So I have a m3 impact. The m4 comes with magnetic to hold the side level from sliding back and double loading. I am wondering can the same magnetic be apply to the m3? Where on m4 is the magnetic located? Can anyone take close up pictures of these magnetics? Wanted to know if they can be apply to the m3. Since both use same side cocking level shouldnt too hard to do some mods to make it work.