The OTs-38 Stechkin is a 5-shot, double-action revolver, in production and service with the Russian Army since 2002, chambered in the silent 7.62x42mm SP-4 cartridge. This revolver is a silent weapon. The effective range of fire is 50m. The fired cases are kept in the cylinder thus ensuring the absence of sound of fire. The cartridge employs a captive piston so there is no flash or loud report upon discharge. As the cartridge is rimless, the cylinder is fed via full moon clips. Noiseless and flameless shot is made due to special SP-4 cartridges with power gases localized in the case. The OTs-38 revolver can be rightfully called noiseless, since the noise level when making a shot and dry firing is practically identical