The BMJR Ultimate Embryo started as a drawing for an indoor micro RC that a friend had been plying with. We liked the lines and decided to simplify the structure and reduce the size to fit the 70 sq. in. maximum wing span for FAC rubber powered Embryo Endurance. Our prototype was built in 2003 and not really tested until our renewed interest in Embryo this past year. Flying weight with a 21â€ rubber moor is under 25 grams. Kit is laser cut and includes a complete hardware pack and Japanese tissue covering. Wing Span 14 1/2", Area 68 sq. in.