In 1964, a draft tactical and technical requirements for small-caliber lightweight gun. Work on small-caliber ammunition were already under the leadership of a group of V.M.Sabelnikova L.I.Bulavskoy, B.V.Semina, M.E.Fёdorova, P.F.Sazonova et al. Perestvolennogo tests in the experimental procedure showed the possibility of AKM create a small-caliber machine-based system had a Kalashnikov. In 1966 GRAU (Grau) issued tactical and technical requirements for the development of the new machine caliber 5.60 mm. The performance characteristics of a Kalashnikov 40-P