I think that your solution is a better one then i suggested. And more realistic too.
But Then again Rather than going prone isn't it better to have it only fire 100% accurate when the bipod is in use?
The low reserve ammo is not a big problem since you can get ammo pretty easy in Battlefield 2042.
Indeed the drop off is extreme. Some scopes are unusable because of it. there is no use for a 8x for a distant target when you have to aim off screen to compensate for the bullet drop, since there is no Zeroing option ingame for it ( BTW that would be a nice addition too for the game. if it isn't already planned )
The gun isn't unusable but i think its just nerfed way to hard. and 1 shotting people with it is boring. Like i said the M5 Recoilless can 1 shot Nighbirds etc. While the AA Rocket gadget does not.
So to any DEV reading this. Please Revert the DMG to the Launch Values. And make it so that the gun can only fire scoped when the bipod is in place so that the gun is Balanced out.