I can't seem to find any Bullets in 1.12.2-19.15.7.
I use this version since i use the Warfare 44 extension Pack that needs this Version. I can only find the M1919 but no Ammunition.
Any solutions or do i need to drop the extension pack?
And yes the Bullets do appear in newer version.

This is for an obsolete version of IV. Therefore, it is not a bug. W44 needs to move things in their folders to the new locations to be compatible with the new bullet systems that all other packs now use.