>>7409385The cannon sits sort of backwards. The part where the front of the scope would correctly sit is the back of the cannon. If you slide it in with the shorter end of the cannon as the front (which is also the cap that pops off to pull out the sword), it clicks into place.
Otherwise, I don't have any looseness in the joints of Mine. Rioter is pretty close to My ideal Megatron, although I was kind of hoping for a repaint in more striking colors, like a G2 green or G2 purple and black version.