Yes, that's possible
1. You can use them without abp, the path can be found in the 'Selection Information' beneath the 'Objects' in the right menu.
2. You can create your own abp, it's actually just a file which merges more models. Like a soldier with a weapon. The visuals work on their own so they don't need abp files.
Edit:
To create an abp for you model:
model =
{
"alliedsupply_stack_m_02",
}
Then save the file in: "art/environment/objects/accountrements/alliedsupply_stack_m_02/alliedsupply_stack_m_02.abp" (this is the same path as in 'Selection Information')