L86 LSW
This gun appeared as the primary weapon in MW2's Overwatch class. It dealt the most damage per second than any other gun in the game. This is a magazine fed automatic weapon. It was developed in the UK. Available from the start of the game.
MG36
The MG36 is also unlocked from the beginning of the game. Developed by Heckler & Koch in Germany, this LMG is a variant of the G36 assault rifle. This weapon is no longer offered by Heckler & Koch.
PKP Pecheneg
The PKP Pecheneg is a new addition to the COD series. This is available at the start of the game. It was developed in Russia and is currently being used by Spetsnaz. This gun is named after a war-like tribe of turkic people.
MK46
This LMGis an American version of the Belgian FN Minimi LMG. It is currently being used by the US Army. Unlocked at level 68.
M60E4
This gun is a variant of the M60 LMG, which featured in Black Ops. In MW3, it is unlocked at level 72. The M60E4 is the most modern variant of the M60. In general, it is the most reliable weapon of all the M60 LMGs. Developed in the USA in '57.