论文部分内容阅读
57式7.62mm重机枪仿自苏联SGM重机枪,自1957年仿制生产,曾大量装备部队,后被67式7.62mm轻重两用机枪取代。57式7.62mm重机枪发射7.62×54mm凸缘枪弹,采用导气式工作原理,枪机偏移式闭锁方式,只能连发发射,采用250发弹链箱供弹。全枪质量29kg,枪身和三脚架质量均为14.5kg,枪管质量4.6kg,枪身长1120mm,枪管长722mm,初速865m/s,有效射程1000m。
57 7.62mm heavy machine gun from the Soviet Union SGM heavy machine guns, since 1957 imitation production, a large number of troops, was 67-type 7.62mm dual-use machine guns instead. 57 7.62mm heavy machine guns fired 7.62 × 54mm flange bullets, the use of gas-type work principle, bolt offset locking method, can only be fired, the use of 250 rounds of ammunition for the bomb. Full gun mass 29kg, gun body and tripod quality are 14.5kg, barrel quality 4.6kg, gun body length 1120mm, barrel length 722mm, muzzle velocity 865m / s, effective range 1000m.