• the length was still 8,15 m (as one can deduct from the fact that the last exhaust stack is overposed to the rear side plate);
• there are 7 ventilation slots on each side (as on I-200 No. 02 and 03, instead than 6 as on early series MiG-3);
• some bulges over the nose were absent, and small air intakes over and under the nose were smaller;
• the tail wheel door had no bulge nor window; probably the wheel was slightly smaller, as on series MiG-1s.
• there were not radio devices;
• the underwing removable panels for guns pods ammo were absent;
• the aircraft was unmarked, and painted with a dark gloss color (possibly the same green as the I-15bis).

The main undercarriage and ventral water cooler/tank fairing were as on standard MiG-3s; apart for this the aircraft was similar to a series MiG-1.