Forensic and Identification Terms
A small explosive charge in the base of a cartridge that ignites the main propellant charge.
Primer
The projectile fired from a firearm.
Bullet
The object launched from a firearm barrel when fired.
Projectile
The diameter of the bore of a gun, often used to identify specific ammunition sizes.
Caliber
The long metal tube through which the bullet travels when a firearm is discharged.
Barrel
The raised areas between grooves in the rifling of a firearm barrel.
Lands
he interior of the barrel where the bullet travels, typically containing grooves and lands.
Bore
A mechanism that removes spent cartridge cases from the firearm after firing.
Ejector
Microscopic markings or scratches on bullets or cartridge cases, often used for forensic firearm identification.
Striations
A complete unit of ammunition consisting of a case, primer, propellant, and projectile.
Cartridge
A measurement unit for the diameter of a firearm's bore or the size of ammunition.
Gauge
Impressions or patterns left on a surface by tools, sometimes used in forensic investigations to link a particular tool to a specific mark.
Toolmark
The rear part of a firearm's action that closes the breech of the barrel, sealing it during firing.
The rear part of a firearm's action that closes the breech of the barrel, sealing it during firing.Breechblock
A component that grips the rim of a cartridge to remove it from the chamber.
Extractor
Spiral cuts in the bore of a firearm barrel, which, along with lands, impart spin to the bullet.
Grooves