My LMG Class is with the MG36 with grip and rapid fire. blind eye, hardlinepro or quickdraw, and stalker. and javelin.
This for me flat out owns for a LMG class, its a well balanced class. That offers good fire rate decent damage. Theres a noticeable kick but when managed is a good class for all game styles
I prefer using the L86 LSW. With a grip and silencer, it's decent. With a grip AND kick, it's about as accurate as a sniper rifle. You just gotta sit close to the screen, haha.
You only need to reload once, and it's one of the fastest LMGs at that. If there's 4-5 baddies in front of you, any weapon other than an LMG won't cut it.
I wanted to like the Mk46, but the iron sights are attrocious. Haven't tried the M60, but I hear it sucks.
Also, because you only need to worry about reloading once, and you have tons of ammo, having a sidearm is mostly redundant, so you can have a noob toob or a riot shield (via overkill) as your secondary weapon. I usually just run around with a shield on my back to give me a slight edge when someone catches me off guard.
@Delta9 I also read somewhere that grip reduces recoil more than kick, so I might try using Attachments, and then grip+red dot