Be very careful jgreen. Dedeye and Nutter are dangerous individuals(to your wallet
). They have a lot of knowledge on the topic and before you know it, youll go down the slippery road of FA's....
I kid, and these guys are great.
But yes you can get an m4 or mp5, sort of. You could get a HK Sear, and buy pretty much any host HK gun. If you wanted the mp5, youd need the 91? I think.
There are different ways to do each of these though.
For instance to do the m4, you could get a DIAS, then get a Colt M4A1 lower receiver(not in CT though-limited to prebans) And then slap a 14.5" upper with a KAC RAS, etc.
Rifle caliber FA is much more expensive than subguns, not always, but as a rule of thumb.
But any of the MG's with a lot of versatility tend to be more expensive.
Belt fed is out of my league