Cock

[kok]

  • A firearm's exposed hammer.
  • To tension the mainspring of a gun in preparation for firing, such as by pulling back the external hammer, pulling back the slide of a pistol, or opening and closing the barrel(s) of a break-open gun.
  • The term referring to the action of manually drawing the hammer back against its spring until it becomes latched against the sear, or sometimes the trigger itself, arming the hammer to be released by a subsequent pull of the trigger. Some external hammers, and all internal hammers, may be cocked simply by pulling the trigger