 The armament consisted of Breda-SAFAT machine guns, with two nose-mounted 12.7 mm (up to 800 rounds) and two 7.7 mm guns in the wings, (1200 rounds total).The new "Falco" II was considered equal by most experts with the Macchi MC.202, but the Macchi fighter, having first call on production for the Alfa Romeo R.A.1000RC.41-1a (the license built DB 601) was still produced in greater numbers.The Re.2001 was then delayed because the Regia Aeronautica insisted on the fuel tanks being placed inside the wings, which required a substantial redesign of the wing structure.