[2][3] It is a gas-operated, air-cooled, belt-fed and fully automatic shoulder-fired weapon.
The M84 is a licensed copy of the Soviet Union's PKM, with a few differences such as a differently shaped stock, and a slightly longer and heavier barrel which has slightly different measurements at the gas port and forward of the trunnion in diameter.
[5] The stock, bipod, and iron sights are omitted from this version,[citation needed] and it includes a heavier barrel and electric trigger, much like the Russian PKMT.
Another version, the M86A, is designed for external mounts and can be used dismounted.
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