Much as I would love to see this, I can't see it happening, and I doubt that any lobbying at this point would work.
Why the FN and not the H&K-91? After all, most of those are on semi only receivers, specially approved by the then BATF.
Why not the BM-59, again any likely to be here will be Springfield Armoury copies, without full auto features and basically based on an M1 Garand.
If we are going to lobby for a prohib rollback, it should be all or nothing.
If we try this now, two things, one is "No", and the other will possibly be a concerted effort to get more stuff declared prohib by "easilly convertible", like the VZ-58 variations John at Marstar had to eat, and the Chinese bullpups that CanadaAmmo is still fighting over.
Much as I would love to take my FN to the range etc, I say step-by-step. LGR gone first. If the CPC gets a majority, we may even get a bit more. Say for example they re-introduce a variant of C-301 to kill the LGR. Rolled into license ATT, prohibs to the range, transport for "any legitimate purpose" etc. THEN we start lobbying for lifetime licenses, un-restricted mags, and de-prohibing stuff.