Fast Shot

Fast Shot is a Fallout, Fallout 2, Fallout Tactics, Van Buren and Fallout: New Vegas trait.

Van Buren
This trait reduces the Action Point costs of all Firearms and Thrown weapons by 1, but also removes the ability to make targeted attacks with Firearms and Thrown weapons.

J.E. Sawyer's Fallout RPG
During the charge phase, the players character can fire a firearm instead of just charging ( This eliminates an action phase of that round), but critical hits with firearms always come in 6 point increments.

Fallout: New Vegas
This trait reduces accuracy with Energy Weapons and Guns by 20% while increasing the fire rate by 20%. This reduction in accuracy reduces the chance to hit when firing in V.A.T.S. and increases the amount of sway when taking zoomed shots out of V.A.T.S.

Ironically, this trait is best suited to players who like sniping. For example, the anti-materiel rifle has a spread of 0.015. With Fast Shot, this would increase to 0.018, a negligible difference, while the increased speed helps compensate for the rifle's low rate of fire. Conversely, automatic weapons, with their high base spread, suffer the most from this trait. Players who prefer to "run and gun" may want to consider Trigger Discipline instead.

This trait works extremely well with other AP reduction perks like Math Wrath. For some weapons, the AP cost of weapons is reduced significantly to the point of allowing many more shots in V.A.T.S. An example of this is with the All-American, which has an AP cost of 13. When using the All-American with Fast Shot and the perk Math Wrath, the AP cost becomes 9.36, which can allow some characters 10+ shots in V.A.T.S. The extra shots in V.A.T.S. also makes the perk Concentrated Fire more appealing.

Note that this trait will reduce your maximum accuracy in V.A.T.S. to 76% (not the case on PC). This can be negated by the Gunslinger, Commando, or Sniper perks.