The RPK-74 light machine gun is available to the Chernarussian and Russian factions, and is inaccurately portrayed as being equipped with a 75 round drum magazine.
The PK Machine Gun is used by all of the factions except for the USMC, and is also seen in fixed positions and in tanks as the PKT.
The PKP Pecheneg is used exclusively by Russian forces, and is equipped with an optical sight.
The Heckler & Koch MG36 is available in the editor and is equipped with a Beta C-Mag drum magazine and EOTech sights.
The Heckler & Koch XM8 Automatic Rifle is another XM8 variant available in the editor.
U.S Marines use the M249 SAW as their standard infantry support weapon.
U.S Army soldiers in the upcoming Operation Arrowhead expansion are equipped with M249 SAW Paratrooper machine guns as their standard support weapon. British Army units in the British Armed Forces DLC also use the similar FN Minimi Paratrooper, which is equipped with an Aimpoint sight and is called the L110A1.
The M240G is used by the United States Marine Corps both as an infantry weapon and mounted on up-armored HMMWVs and SH-60 Seahawk helicopters. In Operation Arrowhead, ELCAN M145-equipped M240s are used by U.S. Army units, but would be accurate to see M240Bs instead. It is also mounted on the ramps of the Army's CH-47F Chinook helicopters.
The L7A2 machine gun appears in the British Armed Forces DLC, both as an individual weapon and mounted aboard Land Rovers and Supacat Jackal patrol vehicles.
The M60E4 Machine Gun appears in Operation Arrowhead and used by Czech special forces operatives.
USMC Force Recon soldiers, most notably Sergeant Chad 'Robo' Rodriguez, use camouflaged Mk 48 Mod 0 machine guns as their main support weapons. A desert camouflaged version is also used by Delta Force soldiers in Operation Arrowhead.