Match the Word in Column 1 to Its Definition in Column

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once.
A)The cut or low-lying portions between the lands in a rifled bore
B)An interior constriction placed at or near the muzzle end of a shotgun's barrel to control shot dispersion
C)A discipline mainly concerned with determining whether a bullet or cartridge was fired by a particular weapon
D)A chemical test used to develop patterns of gunpowder residues around bullet holes
E)The rear part of a firearm barrel
F)The mechanism in a firearm that throws the cartridge or fired case from the firearm
G)The mechanism in a firearm by which a cartridge or fired case is withdrawn from the chamber
H)The spiral grooves formed in the bore of a firearm barrel that impart spin to the projectile when it is fired
I)The diameter of the bore of a rifled firearm, usually expressed in hundredths of an inch or millimeters
J)Size designation of a shotgun, originally the number of lead balls with the same diameter as the barrel that would make a pound. The only exception is the .410 shotgun, in which bore size is 0.41 inch.
K)The raised portion between the grooves in a rifled bore
L)The interior of a firearm barrel
M)The process of determining the distance between the firearm and a target, usually based on the distribution of powder patterns or the spread of a shot pattern
-Extractor