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回顾枪械的发展史,不难看出,各国的枪械发展都是采取研制新产品和改进老产品并举的模式,而且从效费比来看,改进已有装备更是减少研制经费、缩短研制周期、提高作战效能的首选途径。如美国M16步枪在原型枪AR-15的基础上设计而成后,先后改型为M16A1、M16A2、M16A3……,经过30多年的改进,现已形成系列化和枪族化,其变型枪和派生枪已愈百种。又如前苏联的AK-47步枪,不仅在本国不断改型为AKM步枪和包含10多个型号的AK74班用枪族,而且在华约各国和第三世界国家也大量采用和改型。
Recalling the history of the development of firearms, it is not difficult to see that the development of firearms in various countries is to adopt the model of concurrent development of new products and improvement of old products. Moreover, from the perspective of cost-benefit ratio, improving existing equipment reduces the development funds and shortens the development cycle, The preferred way to improve operational effectiveness. For example, the United States M16 rifle was designed on the basis of the prototype gun AR-15 and was successively modified to be M16A1, M16A2, M16A3. After more than 30 years of improvement, a series of gun and gun families have now been formed. Derived guns have more than 100 species. Another example is the former Soviet Union AK-47 rifles, not only in their own continuous transformation into AKM rifles and containing more than 10 models AK74 class gun family, but also in the countries of Warsaw Pout and the third world countries have also adopted and modified.