Here folks is a rough sketch of OOO Tajadoru Combo's Tajadoru Spinner! Based on this rough sketches, it looks like the rumored bowgun that OOO will use in his Kujaku arm.
Based on this rough sketches, it seems that if he opens the top of the spinner, he can place at least seven Cell Medals and basing it on the arrow drawings, it seems that he will use it the same way Kuuga uses his Pegasus Form's weapon in shooting enemies... and the big circle spins!
Take this as a grain of salt... same goes with my bad explanation about the spinner. Let's wait till it is officially confirmed.
Source (Spinner Image): Gold Samurai
I find the design really eye-catching. In short, aside from Tora's Wolverine claws, this is one of my personal favorites from OOO list of arms.