These are modified parts to allow you to mount BD-1 on your back like Cal does. Disclaimer my modifications are done simply in TinkerCAD just altering what I needed to make it work, I’m no pro. It uses most of the parts from the original design with the exception of the Lower Leg Frames, Tilt Gear, and Neck. I’ve included a Mount that I used to secure him on. I attached this to a Nylon harness and mounted bolts through my jacket into the feet. You can find the rest of the files at Mr Baddeley’s Patreon. https://www.patreon.com/mrbaddeley