You can look at the C&R list here.....

http://www.atf.gov/publications/firearms/curios-relics/

Weapons taken off the NFA registry or excluded from it are specifically listed.

JYD #123 The great one formerly known as Architect.

I am now a fictional British television police officer (currently a Detective Sgt) at Thames Valley Station. My governor is Detective Inspector Fred Thursday and it’s 1969.