I hope I've got this tagged and placed correctly. There are no actual mods to the figure, but rather a set of upgrade parts I designed, 3D printed, and painted. I call it Apex Power Optimus Prime. Some credits first: The Powermaster Optimus Prime shoulder guns are adapted from this model on Thingiverse: Optimus Prime Powermaster Cannon by green_eggs_and_sam I scaled it, hollowed it out to fit over Siege Optimus' smokestacks, and added a peg. The arm cannons also use the barrels from this model, and serve as adapters to make the big guns usable in other locations. They are sized to fit into the hollow area with a peghole of their own. I used that to add fins in homage to God Ginrai/Apex Armor Optimus. The torso insert started life as this Transformers Siege Matrix of Leadership - Chest Insert by firetox but I only used the basic shape, trimming off the Matrix detail and adding a piece that extends down over the truck grill to mount the Powermaster engine. I also tried to add an Autobot logo to the section between the windows, but it didn't work as well as I'd have liked. I was going for a sort of IDW-styled chest. I also armed him with the following weapons: 5mm Compatible Gattling by MetaCreateStudios 5mm compatible Gatling gun Transformers Earthrise 5mm compatible Ion Rifle for Optimus Prime by MetaCreateStudios 5mm compatible Ion Rifle Everything else was designed from scratch and painted by me: Powermaster engine 5mm port expansions that clip on to his back Apex Armor/God Ginrai inspired back wings and forearm winglets Very loosely PM Optimus inspired leg armor/boosters Powermaster Optimus inspired head gun things Plus the aforementioned shoulder guns, Powermaster adapter, and arm cannons. I designed it all robot mode first, but almost all of it fits somewhere onto the vehicle mode. The only part that I couldn't find a spot for was the head add-on. The rest fits pretty neatly, if a little awkwardly, onto the vehicle mode, with the PM engine resting in the back, ahead of the trailer hitch, with the torso adapter piece tucked into the gap in the back of the cab. It would probably be easy enough to replace the truck mode grill with a piece to hold the engine, but I wanted to go a no modifications route with this. Robot mode with additional weapons and blast effects Alternate robot mode with the shoulder guns mounted on the arm cannons Truck mode Alternate truck mode
