I have no idea why they didn’t stick with that design ? The magnet switch out forearm parts were so easy and safe to switch out on the 42 and 43 . For the money we pay we shouldn’t have to be snapping fragile parts out .
I'm thinking it had something to do with the fact this IM has those extra blue lights in the arm. They had to design around it i guess. They still could have used magnets somehow though i agree with that.