4"/5" true x race drone

This is my first design of a 4" racedrone its being build right now but im still waiting for a few parts before flying
i designed it to be able to have any tilt on the camera you want and easily fit a gopro on top. the arms are designed with sort of a quick release which means you only need to remove 3 screws from the bottom to change arms and dont need to dissasemble the entire stack.
the end og the arms there is a little 1mm thick edge to make a breaking point that might save your arm in a c