Actually, the Me-163 with the retractable landing gear was the Me-263. It had a raised canopy, electrical/hydraulic system powered by a three-blade "windmill".
It had a tricycle landing gear, about 50% more propellant, and 150 rounds for each of the cannons.
Question I have are we going to get the 163D model (used in summer of 44) with the newer Walter 109-509C motor with a main chamber and a small chamber for extended-endurance cruise...
Me-263 
