 Zavod Nr. 39 built 16 Pe-3s in August, including the prototype, 98 in September and 82 in October before the factory was evacuated to Irkutsk late in October. Production was restarted in April 1942 with a total of 132 built during the year. All were Pe-3bis models except for eleven Pe-3s that had not been completed before the evacuation. Thirteen were built in 1943 before production was canceled in favor of Ilyushin Il-4 bombers. A final production batch of 19 was built at Zavod Nr. 22 in early 1944, but these were more lightly armed than earlier versions, with only a single ShVAK cannon in the wing center section and one UBK in the nose. The bomb racks in the engine nacelles were eliminated entirely, as was the fixed ShKAS machine gun in the tail. Two DAG-10 grenade launchers were fitted in the rear fuselage, each with ten grenades.
