The KB-P 790 (Дегтярёва Гаранина инд. КБ-П-790) is a light machine gun prototype of Soviet origin. The weapon uses a delayed blowback operation and is chambered in the 7.62×39mm round.
Also known as the Degtyarev-Garanin, it was one of the four competitors in the contest for replacing the RPD. Ultimately it lost to Kalashnikov's RPK.
References
Сергей Монетчиков, РУССКИЕ ОРУЖЕЙНИКИ: Создатель единого пулемета, Bratishka issue of July–August 2003 (in Russian) Юрий Пономарёв "Битва трёх «К»", Kalashnikov magazine, 2010/6, pp. 76–85 (in Russian)
See also Garanin machine guns List of Russian weaponry