One of the game I played is not even sure if the rpk is cumbersome enough to be consider a ''support weapon''.
The budget is low but I am ready (and able) to do a lot of stuff. I was event considering a complete build. Something like
http://acepilots.com/ww2/m1919a4.jpg
or this
http://esensja.pl/magazyn/2001/07/img/ilustr/16_01c.jpg