Gauntlet

Various types of gauntlets appear as weapons in Fallout 3, Fallout: New Vegas, Fallout 4, and Van Buren.

Background
A gauntlet is usually a piece of armor used to protect the wearer's wrists in combat, but some gauntlets have been fashioned instead to inflict injury rather than defend against it. Many are derived from the natural weapons of mutated animals, such as deathclaws, giant mantises, and yao guai, but some are constructed out of ordinary metal.

Bear trap fist
A makeshift weapon fashioned by the ghost people of the Sierra Madre. Despite it's crude nature, it's cleverly made, with the reset lever being aligned with the arm for easy access and ability to reset after use.

Bladed gauntlet
The bladed gauntlet is a small cuff with three pieces of large shrapnel fastened to it. When the wearer attacks, the blades savagely slash open skin and rake through soft tissue.
 * For the unique bladed gauntlet, see: Cram Opener

Deathclaw gauntlet
Fashioned from the hand of a deathclaw, this gauntlet is as frightening as one. The razor sharp claws are able to totally negate any protection the enemy is wearing and slice to the bone.

Fist of (the North) Rawr
A deathclaw gantlet that was forged with the hand of the legendary deathclaw, Rawr.

Mantis gauntlet
Mantis gauntlets are the claw of a giant mantis that has been fixed to a cuff. The gauntlet is remarkably sharp and often used by White Legs bone-breakers due to the abundance of mantises in Zion and the mantis claws' durability.

Embrace of the Mantis King!
Embrace of the Mantis King! is a large mantis gauntlet forged presumably from the mantis "king". It is much more thorny and cumbersome than a regular mantis gauntlet.

Yao guai gauntlet
This gauntlet is constructed the paw of a yao guai. The massive bear paw can not only cut deep wounds but bruise or even break bones because of its burdensome size.

She's Embrace
She's Embrace is a yao gaui gauntlet made from the paw of the mythical yao guai, Ghost of She.

Electro-gauntlet
A gauntlet that presumably lets off an electric shock upon striking the target.