Post #1 asks about "manufacturer". There is none for a PMF. Form 1 4a for PMF's is blank (unless the fully finished PMF was obtained by purchase), 4h is your name, city, state
I was suggesting gun trust for not just NFA items.

Form 1 for Trust vs Individual is a bit different. Individuals have to answer the "makers questions" section.

For OP post#1, if the 80 PMF is already marked, form 1 for sbr requires you to add your name, city, state.

Not clear to me if you have a PMF that has on it "Cal. Multi", form 1 wants to know the actual Cal of the NFA item, but not clear if form 1 cal has to also be marked on the PMF.

Entity vs Individual is a choice. I prefer Entity (trust).