Ummm, what armament did the G-2 have?
1200kg of bombs (with basic A2A armament).
or
37mm BK 3.7 (Flak 18) with 72 rounds.
or
Two 30mm Mk 108s with 135 rounds per gun coupled with two 20mm MG151/20 in the lower part of the fuselage.
The 110/R5 could hold the 37mm Bk 3.7 as well as the two 30mm.
There was also an option to install a GM1 (power boost) system, which required the removal of the ventral gunner position take accomodate the 1,400lb GM 1 system.