Action Types

Bolt-Action Bolt action is a type of firearm action in which the weapon's bolt is operated manually by the opening and closing of the breech (barrel) with a small handle, most commonly placed on the right-hand side of the weapon (for right-handed users). As the handle is operated, the bolt is unlocked, the b... View Guns
Combat Defense Action The HK Combat Defense Action is also known as the Law Enforcement Modification (LEM) trigger system. It combines the advantages of a cocked striker component (constant level of trigger pull from first to last round fired) with a double-action hammer system. Using such an enhanced trigger system c... View Guns
Lever Lever-action is a type of firearm action which uses a lever located around the trigger guard area, (often including the trigger guard itself) to load fresh cartridges into the chamber of the barrel when the lever is worked. Most lever-action firearms are rifles, but lever-action shotguns and a fe... View Guns
Over/Under Barrel configuration where one barrel is on top of another barrel.  View Guns
Pump A pump-action rifle or shotgun is one in which the handgrip can be pumped back and forth in order to eject a spent round of ammunition and to chamber a fresh one.  When used in rifles, this action is also commonly called a slide action. http://goo.gl/Mdsjc View Guns
Revolver Double-Action A revolver houses cartridges in a rotary cylinder and advances them in-line with the bore prior to each shot. Revolvers are most often handguns however examples of rifles and shotguns have been made. The cylinder is most often rotated by manipulation of the trigger and/or hammer although some are... View Guns
Revolver Single-Action A revolver houses cartridges in a rotary cylinder and advances them in-line with the bore prior to each shot. Revolvers are most often handguns however examples of rifles and shotguns have been made. The cylinder is most often rotated by manipulation of the trigger and/or hammer although some are... View Guns
Revolver, Double/Single-Action A weapon can be fired in either double-action mode by pulling the trigger, or single-action mode by cocking the hammer manually before firing. This is distinct from double-action only, since the weapon does not have to be fired in double-action mode, for example, the Colt Python. reference: ht... View Guns
Semi-Auto A semi-automatic firearm, or self-loading firearm is a firearm which performs all steps necessary to prepare the weapon to fire again after firing--assuming rounds remain in the weapon's feed device or magazine. Typically, this includes extracting the spent cartridge case from the weapon's firing... View Guns
Semi-Auto, Double-Action A double-action, also known as double action only (DAO) to prevent confusion with DA/SA designs, is similar to a DA revolver trigger mechanism; however, there is no single action function. For semi-automatic pistols with a traditional hammer (that employ only the double action function of the tri... View Guns