It comes in at 19.2oz. I'm using two HS-225BB Mini servos for the ailerons, and they weigh 0.95oz each, so they are a bit lighter than standard sized servos. But they have lots of torque and speed, especially on 6V. I used the gear blocks and landing gear provided in the kit. The wheels are 2.5" DuBro Super Lite Wheels, and they are indeed very light. I suppose one way to save weight is to use only one aileron servo. But then of course you have torque rods to deal with, so that eliminates some of the savings. I left off the diagonal cross bracing (shear webs) on my wing. The supplied balsa spars were very hard, and  felt that the cross braces were not necessary. The finished wing is very strong, and I think I made the right call there. I also drilled holes in the ribs, ailerons,  and the balsa sheet tips, saving me another ounce. It doesn't sound  like much, but it all adds up!