Sniper

 is a perk in Fallout, Fallout 2, Fallout 3, Fallout New Vegas, J.E. Sawyer's Fallout Role-Playing Game and Fallout Tactics: Brotherhood of Steel.

Fallout, Fallout 2 and Fallout Tactics
You have mastered the firearm as a source of pain. With this Perk, any successful hit in combat with a ranged weapon will be upgraded to a critical hit if you also make a Luck roll. It adds another luck roll of (10*Luck). 10 LK means every hit is automatically a critical hit.

This skill is broken in Fallout Tactics and does not work at all.

Fallout 3, Fallout New Vegas
With the Sniper perk, your chance to hit an opponent’s head in V.A.T.S. is increased by 25%. As with most perks that increase your chance to hit in V.A.T.S., this bonus is multiplicative, not additive.

J.E. Sawyer's Fallout Role-Playing Game
You don't waste bullets on flesh wounds. When using firearms, your successful attack rolls are increased by 30 for purposes of determining critical hit results.

Snajper Снайпер