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2005年9月,我国自行研制的QJK99-12,7-1型航空机枪通过设计定型。该枪是我国自行研发的第一挺航空机枪,具有质量轻、后坐力小、携弹量大、结构简单紧凑、可靠性高、操作维护简单方便等特点。该枪的成功研制具有里程碑意义,它填补了我国轻武器装备领域的一项空白,其先进的性能体现了我国轻武器装备的新水平。该枪名称中,“Q”是“枪”的汉语拼音首字母,“J”是“机”的汉语拼音首字母,“K”是“空”的汉语拼音首字母;99代表立项的年份是在1999年;12．7代表口径为12．7mm:1代表该枪只有一个枪管。
September 2005, China’s self-developed QJK99-12, 7-type aircraft guns through the design stereotypes. The gun is China’s first self-developed aircraft gun, with light weight, recoil is small, carrying a large volume, simple and compact structure, high reliability, easy operation and maintenance features. The successful development of this gun marks a milestone in that it has filled a blank in the field of light weapons and equipment in our country and its advanced performance reflects the new level of China’s light weapons and equipment. The name of the gun, “Q” is the first letter of the “Pinyin” “gun”, “J” is “machine” Pinyin initials, “K” is “empty” Pinyin initials; 99 representatives of the year is In 1999; 12.7 on behalf of the caliber of 12.7mm: 1 on behalf of the gun only one barrel.