[thatguy96]

The A-20G-1 (with the 4x20mm cannon nose) was not received well by the USAAF. The reliability of the cannon was notoriously bad. Most of these were passed to the Soviet Union (one might consider adding it to that OOB). The A-20G-20 with the 6x.50 cal nose was used by the USAAF.

I released a tiny aircraft mod some time ago that had both of these variants, the A-20G-1 in the Soviet OOB and the A-20G-20 in the USA OOB.