The GAU-8 is auto-loaded, so your updated M1 crew would only need 3 men (bye, bye loader). That frees up a considerable amount of interior room.
A-10 fighters only fly with 1,100 rounds of 30mm. The 105mm and 120mm ammo storage areas in M1's could hold about 3,600 rounds of 30mm.
Each upgraded M1 would pack the firepower of 3 A-10 fighters, and could stay near our infantry for considerably longer under fire, too.
5 Legislative Days Left Until The AWB Expires