A production fighter, just look at the performance-cruise and max speed!, and it's first flight is 1941!
Top speed: 596 mph
Range: 25 mi
Weight: 4,200 lbs
Cruise speed: 497 mph
Wingspan: 31′ 0″
Engine type: Walter HWK 109-509
Designer: Alexander Lippisch
http://www.airwargame.com/upload/ima.../Me163B_04.jpg
http://www.military-art.com/mall/images/nt263.jpg