If it DOES qualify as a curio & relic, does that mean that I will be able to register it without fear of having it confiscated?
NO! All being classified as a Curio and Relic does is allow holders of a FFL03 (C&R License) to sell/trade such items among themselves. (Or purchase across State Lines without going thru a dealer (FFL01). All rules and requirements of the NFA are still inforce.