Fast Shot

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

Fallout, Fallout 2 and Fallout Tactics
This trait reduces the Action Point cost of all throwing and firearm attacks by 1, but does not allow making Aimed Shots. Despite the description, in Fallout, it actually reduces the cost of all weapons, not just throwing and firearms. This was changed in the later games.

When combined with 10 Agility, "Bonus rate of Fire", "Sniper" and a turbo plasma rifle, it gives the player character 5 single-shot attacks per turn on average. Adding two ranks of "Action boy" into the mix allows for 3 consecutive bursts from a heavy weapon.

Fallout: New Vegas
This trait increases fire rate by 20% and reduces AP costs by 20%, but reduces weapon spread and V.A.T.S. accuracy by 20%, with energy weapons and guns.

Accuracy penalty can be completely negated by the Gunslinger and Commando perks, (0.8 x 1.25 = 1). Note that this trait will reduce maximum accuracy in V.A.T.S. to 76% (not the case on PC).