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1985年式12.7mm高射机枪,简称85式高射机枪,是我国自行研制的第二代高平两用机枪,于1985年设计定型,并大量装备部队。该枪是在77式高射机枪的基础上简化机构、减轻重量而成,两者的核心部件和性能基本不变。该枪采用气吹式导气方式,短鱼鳃板闭锁机构,强制闭锁,滑脱开锁;枪管圆锥面有纵槽,散热面积大,枪口加装有制退器;供弹机构采用双程杠杆机构,60发弹链供弹,连发射击;平射瞄具为准星照门式,立框式表尺,高射瞄准镜为简易光学缩影环形瞄准镜,放大倍率为2倍。
1985 12.7mm high-altitude machine gun, referred to as 85-type machine gun, is our own research and development of the second generation of high-level dual-purpose machine gun, designed and stereotyped in 1985, and a large number of armed forces. The gun is based on the 77-type machine gun to simplify the structure, reducing weight made of the two core components and performance remained unchanged. The gun adopts gas-blown air-guiding method, short-fish gill plate locking mechanism, forcible locking and slipping off and unlocking; barrel conical surface has longitudinal grooves with large heat dissipation area and muzzle equipped with a brake; Lever mechanism, 60 rounds for the chain of shells for firing, firing firing; flat sights for the prospective stars according to the portal, the vertical frame-style table, high-range aiming telescope telescopic sight for the simple optical zoom magnification of 2 times.