Maximum speed at sea level: 273 knots (506 km/h, 314 mph).
Maximum speed at altitude: 350 knots (648 km/h, 403 mph).
It was faster at high altitude than the contemporary Spitfire V and Messerschmitt Bf 109F-2 versions.
At the eastern front in World War 2, most air-to-air duels were at lower altitude where the Messerschmitt Bf 109F-2 was a bit faster.
Armament:
1x 12.7 mm Berezin UBS machine gun
2x 7.62 mm ShKAS machine guns
2x 100 kg bombs or 6x RS82 rockets