njb902 wrote:if those arms microns combin has anyone checked to see if others do?
I think some of the Takara design team checked.
Actually, this set and the upcoming sword (SupermegaBlackHoleExtremeCalibur! or something that one's called) are specifically designed to form a larger accessory. The individual AM Microns that come with the Japanese Prime toys are advertised as combining, sometimes in officially named ways, other times in just random ways that vary in quality. These things tend to have a couple of Micron ports and pegs on them so combination is possible with most.