_ is a weapon designed to be fired using one hand. _ gun requires the use of two hands. All handguns are _ . _ is a handgun in which the magazine is a revolving cylinder. _ is smooth-bore shoulder firearm designed to fire cartridges containing numerous pellets or a single slug. _ is a long-barreled weapon with the arrangement of spiral grooves and lands on the inside of its barrel which provide spin and stabilization of a bullet along its path. A weapon which continues to fire until the trigger is released is an _ weapon. _ is the unit of measure of the inside diameter of a shotgun. The _ the _ the _ the diameter of the shotgun and the shot. _ is a measure of the diameter of the bullet. _ is the study of projectiles in flight. The firearm and the name of the manufacturer are _ evidence. Markings on the projectiles and cartridge casings unique to the firearm that fired them are _ evidence