North Carolina Basic Law Enforcement Training (BLET) State Practice Exam

Which of the following is not one of the four parts of ammunition?

1. Casing

2. Projectile

3. Trigger

4. Powder

The correct answer is: Trigger

Ammunition is composed of four main components: the casing, the projectile, the powder, and the primer. The casing holds the other elements together and protects them, the projectile is the part that is expelled from the firearm, the powder is the propellant that generates the gas needed to launch the projectile, and the primer ignites the powder. A trigger is not part of the ammunition itself; rather, it is a mechanism of the firearm that initiates the firing sequence by striking the primer when pulled. Understanding the structure of ammunition is crucial for recognizing firearm functionality and safety practices in law enforcement.