For a LMG i prefer a L86 LSW with thermal sight. Heres some tip with an LMG : thermal reduses the recoil alot. If you do not have the thermal try going prone. In MW3 recoil can affect differently you by your stances. heres the final tip DO NOT USE RAPID FIRE.

I agree Lmg in mw3 are underrated but skilled. I use the L86 Silencer, it's like a bloody laser gun ready to demolish my enemies, it's quite fast to. It's basically a ACR with more ammo and damage!

I'm sorry but I've entered my vote on the poll as these tips didn't help at all, but that's because I already npknew this from TmarTn YouTube video lol. He said exactly that, but I wud think they r great if I didn't know so good job!

The best attachments to use for L86 is grip and thermal, because the gun will have insane accuracy.

Cykoassasin you forgot to mention you should also put a silencer on it with the thermal sight. This makes a terrific combo.