The SB 2M-105 was a sole prototype of an attempt to upgrade the then obsolete SB series bombers. The plane was powered by two Klimov M-105 engines, had redesigned wing that reduced the area and wingspan. The wing itself was later incorporated into Arkhangelskii Ar-2 dive bomber

The SB 2M-105 has been in the game since the start of the Open Beta Test prior to Update 1.27. For its size, the SB features a decent payload options of up to three 500 kg bombs or a mixed loadout of two 250 kg and six 100 kg bombs. The manoeuvrability of the SB is also very impressive, allowing it to dogfight with less agile enemy fighters and damaging them utilizing the front mounted twin ShKAS machine guns. However the rear hemisphere protection is rather weak with just single ShKAS machine gun in a dorsal turret and single ShKAS in a ventral turret.