Talk:The True Story of a Human Trafficker's End/@comment-35711173-20180605063146

In the diagram below, 1. the bullet, as the projectile; 2. the case, which holds all parts together; 3. the propellant, for example gunpowder or cordite; 4. the rim, which provides the extractor on the firearm a place to grip the casing to remove it from the chamber once fired; 5. the primer, which ignites the propellant.



https://en.wikipedia.org/wiki/Cartridge_(firearms)

You confused part 1 with part 2.