How do I buy a sub machine gun?

[MegademiC]

Considering the great expense with any machine gun, is it better to go through a reputable dealer like those attached to this thread or peruse GunBroker? I can't imagine the great difficulty and frustration with spending $20k on something that does not run as it should...

Newb here:
I think starting off, stick with the big names- like getting into guns... you buy one or two from known legit sources, then learn the ropes and venture into the abyss.

I just bought my first, and honestly, avoiding bids and crap was worth the “extra cost”. Its like 7% tops.