Both were light-weight interceptors of mostly wood construction and powered by a single rocket engine.
The wings and vertical tail were adapted from the V-1 flying bomb.
The P.1103 and P.1104 were in competition with the Heinkel P.1077 and Bachem Ba 349, the latter being selected by the Luftwaffe over the others.
[2] Work on the P.1103 and P.1104 was abandoned in September 1944 to allow Messerchmitt to focus on the Me 262 and P.1101 projects.
Aircraft of comparable role, configuration, and era