近年来,世界各国的警用手枪发展很快,老式手枪逐步被新一代手枪所替代。以美国为例:30年前美国警察普遍使用的是转轮手枪,如今,转轮手枪正在被伯莱塔、格洛克、西格绍尔等具有双动功能的新型大容弹自动手枪所取代。建国至今50多年来,国产警用手枪也经过了54式、64式、77式三种 In recent years, the police pistols in various countries of the world have developed rapidly. The old-fashioned pistols are gradually being replaced by the new generation of pistols. Take the United States as an Example: The U.S. police generally used revolvers around 30 years ago. Nowadays, revolvers are being replaced by new large-capacity automatic pistols such as Beretta, Glock and Sigsauer . Since the founding of the People’s Republic of China for more than 50 years, domestic police pistols have also gone through 54, 64 and 77 three