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22 hours ago · Pershing asked the Army Ordnance Department to develop a machine gun with a caliber of at least 0.50 inches (12.7 mm ... and some SAS units used the aircraft (AN/M2) version of the gun, while beam/waist-mounted and turret ... the air-cooled 12.7 mm AN/M2 was fitted with a substantially lighter 36-inch (91 cm) length ...
