Believe this will do it:
0 = ["AmmoboxInit",[this,true]] spawn BIS_fnc_arsenal;
Place that in the init of the object in Eden and you should be good.
Been a while since I've made a sheep into an arsenal box.
We will definitely let you know what set will be used. We often refer to it as "standard 15th", and it is used for all official training and operations. Once you apply, your recruiter will send you directions for installing the 15th official mod pack.
If you're on our public server, the information for that mod set is posted in the Server Information thread, and it is a different set than our official mod pack.
Well you should also be able to do this for a limited arsenal setup:
Drop object
Go to Equipment Storage
Select VIRTUAL
Set at least one object to infinite (left side of quantity arrows)
Object should now be the only thing available in an arsenal option added to that object.