目的 总结七种手枪（NP22手枪、瓦尔特P38手枪、斯太尔GB手枪、FN M1935手枪、勃朗宁BDA手枪、QSZ92式手枪、格洛克19型手枪）的射击弹壳的枪种痕迹特征,以期利用射击弹壳痕迹识别7种9mm手枪。方法 使用每支手枪各射击20发DAP92式9mm子弹后,分别收集每种手枪的射击弹壳,利用体视显微镜对弹壳上的痕迹进行观察并记录,研究总结每种枪支的枪种痕迹特征。结果 格洛克19手枪射击弹壳上的矩形击针头孔痕迹,斯太尔GB 9mm手枪射击弹壳上的抛壳挺让位槽痕迹,QSZ92式手枪射击弹壳上的马蹄形弹底窝痕迹、扇形刮擦痕迹,以及各种枪支射击弹壳上抛壳挺痕迹的形状、位置差异,是否出现有舌痕和弹匣口刮擦痕迹,这些痕迹特征都是进行枪种区分的重要依据。结论 通过观察和分析七种手枪的射击弹壳,我们找到七种枪支在射击弹壳上对应的枪种痕迹,可以利用七种9mm手枪的射击弹壳痕迹进行区分枪种。

Objective To classify the characteristics of marks on cartridge cases shot from seven kinds of 9mm pistols (NP22, WaltherP38, Steyr GB, FN M1935, Browning BDA, QSZ92, Glock19) for identifying the kinds of involving pistols. Methods Twenty pieces of DAP92-type 9mm bullets were shot with each selected pistol, with the cartridge cases being separately collected, observed and recorded of the marks on them by stereoscopic microscope. The marks’ characteristics were perused against each kind of the involving gun. Results Every pistol left characteristic marks on the cartridge cases, e.g., the rectangle firing-pin marks from Glock19 Pistol, the ejector abdicating-groove marks by Steyr GB Pistol, the horseshoe-shape bolt recess marks and fan-shaped scraping marks from QSZ92 Pistol, thereby making shape/position-different marks formed on cartridge cases from the related gun’s ejector, together with some pistols also producing tongue-like marks and magazine-mouth marks on the shot cartridge cases. All of the characteristics of the marks above are important basis for the distinction between the kinds of the test guns. Conclusion The kind of the relevant gun can be likely identified through observation and analysis of the relating marks on the cartridge cases shot with the seven-kind pistols tested.