You should try a belt fed M60 ! With tracers !
In basic training we got lots of training on how to disassemble, reassemble, clean, load, exchange barrels, etc., but exactly one opportunity to shoot an M60, with a full box of ammo. It was lots of fun walking the tracers into junk cars at 800 to 1000 yards.
M-60s were all fun and games. Until you had to do 10 mile ruck marchs with one. Then that 24 pound chunk of metal got downright unpleasant.