10mm AP

 is a type of 10mm bullet in Fallout and Fallout 2.

Like other AP ammo, 10mm AP is inferior to other ammo types because of how the engine handles ammo modifiers. Although it's relatively common, you shouldn't go out of your way to collect it. 10mm JHP is a far better choice for any 10mm weapon.

Fallout

 * Carried by Ed the skeleton, just outside the Vault entrance.

Fallout 2

 * Carried by all of the Vault 15 raiders who wield Colt Pistols or P90's.

10mm