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'''12.7x108mm''' is a type of [[ammunition]] for firearms. It is classified as a <span style="color:#AA0000">'''(R)'''</span>ifle caliber.
Much like [[.50 BMG]], this cartridge was originally designed for use in heavy machine guns, such as the DShK, which are not man-portable firearms. Many decades after its introduction as a heavy machine gun round, it was adapted for use in specialized heavy precision rifles, known as ''anti-materiel rifles'' (AMR). These rifles can be thought of as the spiritual successors to anti-tank rifles. It must be noted that in the Mazes, AMR stands instead for ''anti-monster rifle''.
12.7x108mm is pronounced ''twelve point seven by one hundred eight millimeters''.
