ELI5: Explain Like I'm 5

M150 Penetration Augmented Munition

This is a type of special bullet that can go through thick armor. It has a special tip that can break through the tough outer layer of armor, and then go through the softer part inside. This is important because sometimes soldiers need to shoot at things that are protected by strong armor, like tanks or walls. The m150 penetration augmented munition helps them to be able to do this. It's like having a really strong pencil that can draw on a really hard surface.