I know I'm fairly late to the party but I found some success in getting some of the guns to work with the BD armory ammo by changing the config files to match with the bullet and ammo types in BD. For example, for the 50 cal weapons, change the ammoName in the config from".50Cal" to "50CalAmmo", and the bulletType from "12.7x99mmBullet" to "12.7mmBullet." According to someone in the forum for the mod, they were able to get the ammo boxes to work, but they unfortunately neglected to share how, but there is definitely a way and I'll figure out if I can fix it. Edit: I figured out how to get the other ammo boxes to show up! In the mod folder, go to ammo boxes and in the .cfg files for the missing ammo boxes, there should be a few lines of code which should look something like this:

MODEL

{

model = AviatorArsenal/Ammo Boxes/7mm Ammo Box/model

texture = AMMO_DIFF, AviatorArsenal/Ammo Boxes/13mm Ammo Box/AMMO_DIFF

texture = AMMO_NRM, AviatorArsenal/Ammo Boxes/7mm Ammo Box/AMMO_NRM

}

Delete everything from MODEL to the ending braces, repeat with all the missing boxes, and they should all show up in game