Heavy bolter backpack

Needed a devastator backpack for heavy bolters so I remixed this using keksimus' backpack again for better consistency with the rest of the marines I'm making and by scaling down jace1969s heavy bolter pack and attaching the ammo pack to the backpack. (for whatever reason the pack won't show up on the search bar but will give him proper credit when I can) just like with my multi melta remix I gotta make the ammo feed to attach to the gun still.