The reconnaissance Polikarpov R-5 was armed with one propeller-synchronized PV-1 and one in a rear turret mount. The ground attack R-5Sh variant was armed with four PV-1 guns in the wings, in addition to the propeller-synchronized one.
The Polikarpov R-5 reconnaissance aircraft was equipped with one PV-1 gun synchronized with its propeller and another mounted in a rear turret. The ground attack variant, R-5Sh, had four additional PV-1 guns on its wings, similar to the original configuration.