Retractable Gauntlet-Knife

The Retractable Gauntlet-Knife is an assasination weapon used by UNSC agents. If used correctly, it is the perfect weapon of an assasin.

Introduction
The Gauntlet Knife is actually a whole Gauntlet, with the knife itself inside the gauntlet. When pushing a button on the gauntlet, the knife's sharp edge comes out of the gauntlet, and the wielder can start attack with it. Since it isn't held in the hand, a wielder of the Gauntlet-Knife can use other weapons at the same time if neccessary, which makes it a perfect weapon for agents.

Advantages

 * It's the perfect silenced assasination weapon, which is why it's used by assasins and agents.
 * You can wield other weapons while having the blade retracted out of the Gauntlet, since it's not held in the hand.

Disadvantages

 * It can't be used at long ranges. Because of that, agents will still have to have long range weapons with them.
 * It is supposed to deliver one-blow kills, but if it doesn't hit a really vital spot, it's not certain it will kill the enemy, since it's very small.

Trivia

 * It is a little bit similar to the retractable knife used by Altair in the game Assasin's Creed.