What happens if you want to SBR a pistol that would otherwise be illegal in MA? Case in point, CZ Scorpion Evo as a Pistol not only isn't on the "list" and is not compliant so it can't be transfered, but it also can't even be possesed in MA as it would fall under "assault pistol"
It would be perfectly legal to SBR with 922r conversion parts, but, since no factory SBR exists, there's no way to take possession to even file a form 1
It may be irrelevant, as CZ has announced a carbine version that already has the stock and 922r parts but that also means cutting down a barrel and replacing a handguard