Sixshot Hand Articulate Mechanism

to those who wonder about arm rotations..yup it is really tough mechanism (try to unscrew the arm and u know why)...what im try to preserve here is the 'clicking mechanism inside'...what i have done here is like MP Prime's arm articulation...i think this is the toughest articulate parts to-date coz it involve custom metal parts and a lot and a lot work and a lot work hav to do...