5" AUW 283g racer. Flies very nicely with 4S 1300mAh. Antenna protector is made from two landing skids, shrinking tube and zip tie tops. Weights 2.2g so it is less weight than a 3D printed fin which would also difficult to fix at the top plate. Unify nano pro32 and crossfire nano are mounted underneath the top of the stack carbon plate. I first planed to use two battery straps for larger batteries hence I did not mount them on the bottom plate. The props are fixed with nylon nuts. They need to be looked at after each pack but save some weight at the most important place. I use motor protectors as they seem to be very good at keeping the motors clean from dirt and mud in case of a crash into the field. One could save 10g leaving out the motor and antenna protectors but as I only do "casual racing" with my buddies I take this compromise for longer endurance.