I'm new to this sort of thing (worrying about 922r compliance)
So far from reading this thread it seems that I'd need to buy a few more parts to make my 1919 legal IF I were to add a folding stock to it via the 1919 stock adapter plate
So far I've bought the Firebird extended charging handle and oversized mag button, the Tromix gas piston, Tromix polymer stock, folding mechanism, and Tromix stock adapter plate.
To be fully 922r compliant, I'd need to purchase either the Firebird FCG... OR, the Tromix trigger set and a magazine base plate...
am I understanding this correctly?