Thread: What needs to be registered

so...having just gone to said site and had a poke around..... the register will contain FAL holders secure storage location..which begs the question...if you store your firearms in the household of another FAL holder..for whatever reason...who needs to register it???
the owner,or the possessor and at what point(after 30days?) does a storer become a possessor ???
Im usually pretty good at working these sort of things out,but as firearms belonging to 5 people are sometimes stored in same safe...its got me puzzled.