Lets see:

-A couple of select fire 10/22s

-VZ61 Skorpion (I already have the pistol version, I would love the select-fire version, actually I'd probably get a couple)

-Glock 18, just because I could

-HK MP5K PDW

-IMI Uzi 9mm

-IMI Mini Uzi 9mm

-IMI Micro Uzi 9mm

-MAC 10s (.45 ACP) and 11/9s (9mm) because of all the great mods available and low cost, especially without the ban. Several of each

-Colt M4A1, at least 2

-FN M16A4

-SIG 553, at least 2

-Some kind of select-fire AR10 type 7.62mm, LMT perhaps

-M240B

That doesn't give me a whole lot of cartridges to worry about, and realistically, I'd shoot the 10/22s and 9mm SMGs more than anything else. After that it would be the 5.56mm stuff. The 240B would be just to have, and while it might make a trip to the range from time to time, I really just like the idea of having a belt-fed 7.62mm. I wouldn't go with anything like a M2 Browning or Minigun just because I could never afford to feed it.

I have enough title I stuff, if the MG ban were lifted, everything I would buy for he foreseeable future would be a form 4 MG or a gun to form 1 into a MG.

As it stands now, I just finished the paperwork packet for my first MG, a M10 .45. As soon as I get the permit and form 4s back from the sheriff it is going in the mail. As long as I live in NC (and as long as a machinegun permit is required by NC law), it will probably be the only MG I will ever own. If I move, or the permit requirement goes away, then a M11/9 and a RR M16 are somewhere in my future.

ETA: Page 3 is mine with my huge list!

PKM

I'm good to go with the M16A1 & Mini UZI SMG I already have but I would have this semi made FULL:

Thompson, love those things.

American 180
Tippmann M2HB .22lr
Tippmann M1917 .22lr
Beretta 93R
SITES Spectre


And to round it out, a Colt LE901 select fire
ETA: oh, fuck it, add a M1918 BAR on that list as well since everyone with a decent mill has been making them better and better since that stupid ban got overturned by the USSC back in 34.