Firearm Basics
This is the study of a projectile in flight.
What is ballistics?
This part of the firearm initiates the firing sequence when pulled.
What is the trigger?
This mark is made when the casing hits the breech face.
What is the Breechblock Face Mark?
This type of wound is typically small and may contain embedded clothing fibers.
What is an entry wound?
What type of ballistics works with the propulsion of a projectile?
Internal ballistics.
These are the two main types of firearms.
What are long guns and handguns?
These spiral patterns in the barrel help bullets spin.
What is rifling?
This database helps match casings to firearms.
What is NIBIN?
These marks on the skin indicate the muzzle was pressed directly against it.
What are contact burns or flare burns?
This type of handgun has a rotating cylinder.
What is a revolver?
These are the raised portions of rifling.
What are lands?
These two organizations merged databases to form NIBIN.
What are the ATF and FBI?
This type of wound is larger and more irregular due to bullet deformation.
What is an exit wound?
This type of long gun can fire either pellets or a slug.
What is a shotgun?
This measurement refers to the diameter of a bullet.
What is caliber?
This organization sets standards for collecting ballistic evidence.
What is OSAC?
A bullet lodged in the body suggests this about the weapon.
What is it was low caliber or low velocity?
This type of handgun has a single chamber and is often semiautomatic.
What is a pistol?
This type of cartridge has its primer located around the rim.
What is rimfire?
These three marks make up a firearm’s fingerprint.
What are the Breechblock Face Mark, Ejector Mark, and Firing Pin Mark?
This residue may surround an entry wound if the gun was fired close to the victim.
What is Gun Shot Residue (GSR)?