Preliminary Exploration of the Shell Casing Marks Left by Glock-19 9 mm Pistol Firing
The formation of bullet cartridge marks,stemming from the processes of loading,firing,and ejection,serves as a varied indicator of specific gun characteristics.This study employs microscopic analysis to meticulously observe and interpret the shell casing marks left by six internationally utilized 9 mm NATO standard bullets(CBC-9mm-15,FC LUGER 9MM,GCED LUGER 9mm,WIN LUGER 9MM,CLA 9MM 16,S&B 11 9×19)fired from a Glock-19 pistol.The findings reveal a remarkable consistency and prevalence in the characteristics exhibited by comparable shell casing marks across various ammunition types.Specifically,the morphological details,location,and frequency of marks including firing pin marks,firing-pin hole marks,tongue-like marks,ejector marks,extractor marks,and the fan-shaped scraping marks at the mouth of the cartridges,all underscore the distinctive and stable signature of the Glock-19 pistol in its firing mechanism.Consequently,this research offers valuable insights and serves as a reference tool for forensic firearms identification and gun traceability in judicial contexts.
trace examinationshell casing marksGlock 19 pistol9 mm NATO standard ammunition
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