My Glock becomes Select-Fire
My AR-15 becomes an M-16
My M1 Carbine becomes an M2 Carbine
Cans all around
I'd look at a F/A .22. Maybe a converted 10/22, or a .22 belt-fed M16 upper.
(2-10 each of the following)
BAR
Ak-47
M2
M1917
M1919A4/A6
MAG-58
Bren LMG
Colt Monitor
H&K G3
FN FAL
MG34
MG42
At least a dozen M-16s in different calibers/configurations
Every single gun I own would be full-auto (if applicable). I want the option of leaving my selector on Semi.
I've really got a desire for F/A weapons, mostly due to the "forbidden fruit" aspect. If I could Form 1 my AR like I could pre-May 19, 1986, there'd be less magic. But because some bureaucrat in Washington decided FOR me that I cannot have CHEAP machine guns, well, I want a complete stable of machine guns. Just to piss the liberal pantywaists off. Even if I never flip the selector to auto, just the fact that I have them is enough for me.
My list is by far not complete or comprehensive. With rare exception, (the French Chauchat comes to mind), I want at least 5 of every machine gun ever made.