Some upgrades for Optimal Optimus Power of the Primes figure that let it transform into tank mode, among other things. The archives are for: a) Poseable hands, where each finger (and phalanx) is articulated. The wrist and each finger base attaches to the hand with a little piece of wire (the wrist have one degree of rotation when attached to the hand, while it rotates on other axle from its joint to the forearm). The thumb can be turned from one side of the hand to the other (as the one from the original hand) for beast mode. The file contains the parts for one hand, but as it's symmetrical, you don't need to mirror it for printing. b) Bigger wings. You just need to detach the original ones to place these. I want to make clear that the ones shown in the pics are different from the version you would download (the ones depicted are just clipped over the originals, but the ones in the file are meant to fully replace them). c) Leg adapter whith a couple of wheels for tank mode. Its function has been modeled after the vintage one (they can be folded when you transform it into the other modes). It can be attached using the peg that's already on its leg (by the way, the file is for the right leg, so mirror the parts for the other one). The joint needs a piece of wire and some glue to keep the parts together (be careful as you glue the pin that keeps the wheels in their place, so they can rotate freely). c) Front wheel for tank mode. It's designed to fit the front of this mode (tab it under the nose of the ship) using both hands (as shown in pictures). The system splits in two and can be attached to the shoulder back pegs when the figure is in any other mode. The assembly requires you to glue the parts, keeping the halves of the wheel free enough to spin. As the assembly can be a bit hard, I add an extra file that shows the placement of each piece. d) Riffle, modeled after the vintage one. e) As I separated the Primal figure from Optimal, I designed an adapter for the back of its hip in order to tab and keep secured the backpack (the piece that contains its head and Matrix), so it's among the files (split in two). I suggest to glue it once you have placed it properly. The extra cannons that the figure shows are not included, because they're not my desing, but an adaptation I made from other source.