in the book,Teach for the Sky,the company Air Service Training designed C.4 as a target drone,is there any more Info and drawing to it ?.
Air Britain's Sitting Ducks, M.Draper,2011, P.88 | (AST C4), P.76 seq (IMA Winged Gliders), P.338 (AEL 4111 Snipe) tells us more than we can digest. No link between them.