Messerschmitt's response was the Me 609, which would use the failed Me 309 project to form the basis of the new fighter.

Only the two inner wheels of the joined Me 309's main landing gears would have been used and would retract into the centre section.

[2] The pilot would have sat in a cockpit located in the port fuselage, with the starboard being smoothed over.

Two versions were planned: a heavy fighter with four or six 30 mm MK 108 cannons, and a Schnellbomber (fast bomber) variant with two 30 mm MK 108 cannons and a bomb load of 1,000 kg (2,200 lb) carried beneath the fuselages.

[3] However, by late December 1942, Messerschmitt Me 609 project was cancelled at the drawing board.