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Positive material identification (PMI) is the analysis of a material, this can be any material but is generally used for the analysis of metallic alloy to establish composition by reading the quantities by percentage of its constituent elements. Typical methods for PMI include X-ray fluorescence (XRF) and optical emission spectrometry (OES). [1]
t. e. Forensic firearm examination is the forensic process of examining the characteristics of firearms or bullets left behind at a crime scene. Specialists in this field try to link bullets to weapons and weapons to individuals. They can raise and record obliterated serial numbers in an attempt to find the registered owner of a weapon and look ...
Gunshot residue ( GSR ), also known as cartridge discharge residue ( CDR ), gunfire residue ( GFR ), or firearm discharge residue ( FDR ), consists of all of the particles that are expelled from the muzzle of a gun following the discharge of a bullet. It is principally composed of burnt and unburnt particles from the explosive primer, the ...
Primer (firearms) In firearms and artillery, the primer ( / ˈpraɪmər /) is the chemical and/or device responsible for initiating the propellant combustion that will propel the projectiles out of the gun barrel . In early black powder guns such as muzzleloaders, the primer was essentially the same chemical as the main propellant (albeit ...
MAC-11. The Military Armament Corporation Model 11, officially abbreviated as " M11 " or " M-11 ", and commonly known as the MAC-11, is a machine pistol / submachine gun developed by American firearm designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s in Powder Springs, Georgia, United States.
The opening lever and the safety catch are clearly visible. In firearms terminology, an action is the functional mechanism of a breech-loading firearm that handles (loads, locks, fires, extracts, and ejects) the ammunition cartridges, or the method by which that mechanism works. [1] Actions are technically not present on muzzleloaders, as all ...
Introduced in 1907, the Colt Police Positive Special is a small-frame, double-action revolver with a six- round cylinder, primarily chambered for .38 Special. The Police Positive Special was intended primarily for sale to law enforcement agencies and enjoys the distinction of being Colt’s most widely produced revolver design, with over ...
Microstamping. Microstamping is a proprietary ballistics identification technology. Microscopic markings are engraved onto the tip of the firing pin and onto the breech face of a firearm with a laser. When the gun is fired, these etchings are transferred to the primer by the firing pin and to the cartridge case head by the breech face, using ...