HK4手枪是一种自动装填(半自动)、联动发射的袖珍手枪。全枪质量(不带弹匣)仅480g,由德国HK公司研制生产。HK4手枪具有两大特点,一是可以很方便地从发射中心发火枪弹改换成为发射边缘发火枪弹;二是更换枪管、复进簧和弹匣后,即可使用勃朗宁9mm手枪短弹(0.380英寸ACP弹)、勃朗宁7.65mm自动手枪弹(0.32英寸ACP弹)、6.35mm手枪弹(0.25英寸ACP弹)和0.22英寸步枪长弹(0.22英寸LR弹)。 该枪保险柄位于套筒左侧,将保险柄推向下方露出白点时 HK4 pistol is a self-loading (semi-automatic), the launch of pocket-sized pistol. Full gun quality (without magazine) only 480g, developed and produced by the German HK company. HK4 pistol has two major characteristics, one can easily be fired from the firing center firing bullets fired into the firing edge; the second is to replace the barrel, reed into the spring and the magazine, you can use Browning 9mm pistol shorts 0.380 inch ACP), Browning 7.65mm automatic pistol (0.32 inch ACP), 6.35mm pistol (0.25 inch ACP) and 0.22 inch long rifle (0.22 inch LR). The gun safety handle is located on the left side of the sleeve, when the safety handle is pushed down to reveal the white point