A weapon is an instrument of attack or defense, such as a firearm or knife.

## See also[edit]

* List of military strategies and concepts
* Armed self-defense
* Firearms
* Concealed carry
* Rifle
* Shotgun
* Handgun
* Magazines
* Knives
* Pepper spray (Mace)
* Taser
* Archery
* Crossbow
* Slingshot
* Sword
* Non-aggression principle
* Second Amendment