The OTs-14 Groza (Russian: Гроза, "Thunderstorm"; also known as the OC-14) is a modular Russian bullpup Assault rifle based off of the AKS-74u and developed in the early 1990s. The Groza was designed for Russian Special Forces and Internal Affairs Ministry as an dedicated CQB weapon, though its modularity allows it to perform as a carbine or sniper rifle, as well as being capable of mounting a GP-30 grenade launcher, given the situation.