Fallout: New Vegas unique weapons

There are several unique weapons in Fallout: New Vegas, weapons of which only one exists in the game world (with some exceptions). Some are found in specific locations while others are obtained as quest rewards.

Unarmed weapons

 * ¹ Normal holdout weapon: May be concealed regardless of Sneak skill.
 * ² Improved holdout weapon: May be concealed if Sneak is equal to or higher than 50.

Melee weapons

 * ¹ Normal holdout weapon: May be concealed regardless of Sneak skill.
 * ² Improved holdout weapon: May be concealed if Sneak ≥ 50.

Guns

 * ¹ Normal holdout weapon: May be concealed regardless of Sneak skill.
 * ² Improved holdout weapon: May be concealed if Sneak ≥ 50.
 * ³ Scoped by default.

Energy weapons

 * ¹ Improved holdout weapon: May be concealed if Sneak ≥ 50.
 * ² Scoped by default.