Gunshot Residue. Gun Shot Residue (GSR). What is gun shot residue (GSR)? What crimes are GSR involved in? How is GSR collected? How is GSR analyzed in the lab?. What is GSR?. Mixture of materials that originate from the firing of a gun. From the chamber. From the barrel. What is GSR?.
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Mixture of materials that originate from the firing of a gun.
From the chamber
From the barrel
GSR will fall onto hands of person firing the gun.
Crimes with guns
Hand/glove/paw is swabbed