The 30 rounds mags are way to small for the APCs you run out way to quick i would recommend either giving them 100 rounds mag or give all the ammo in 1 mag but there for add a overheating system so you cant spam all of the ammo at ones
#Increase APC mag size or give all the Ammo in main mag
naive oracle
vale glacier
its 20 rounds
i think its enough, its between 2 to 4 to kill someone, you can destroy armored jeeps in 12 shots and if youre facing a tank or enemy apc head on you are a bad tanker