AP

* Gameplay mechanics
** Action Points, a derived statistic in the Fallout series.
* Ammunition and weapon mods:
** 14mm AP, a type of ammunition used in Fallout and Fallout 2. 
** Armor piercing, a type of ammunition used in Fallout, Fallout 2, Fallout: New Vegas and Fallout Tactics.
** .45 AP improved sights, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.
** .45 AP HD slide, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.
** .45 AP silencer, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.
* Robots and computers:
** Automated Personality, a computer or robot appearing in the Fallout: New Vegas add-on Old World Blues.