To clarify:
There are two types of "registered" prohibited firearms. One is AW's and the other is a 50 cal. If you were did not register a 50 Cal, but had a registered AW lower (AR lower), then yes, you could put a 50 Cal upper on that lower without breaking any laws.
Only way you can legally "create" a 50 Cal firearms absent of having registered one before the ban.
Oh...and bump.....
There are two types of "registered" prohibited firearms. One is AW's and the other is a 50 cal. If you were did not register a 50 Cal, but had a registered AW lower (AR lower), then yes, you could put a 50 Cal upper on that lower without breaking any laws.
Only way you can legally "create" a 50 Cal firearms absent of having registered one before the ban.
Oh...and bump.....
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