Topic: 3 3.3 Nomenclature Of A Shotgun ( Semi Automatic Type) Flashcards
is responsible for holding all the mechanical parts together of a firearm. These parts traditionally include the trigger housing and bolt carrier group. Unlike other rifles. gauges tend to only have a single receiver.
Receiver
An outlet in the receiver of a gauge through which the spent shells are ejected from the chamber following a firing sequence.
- Ejection Port.
commonly found on pump-action shotguns, stores cartridges end-to-end inside of a spring-loaded tube typically running parallel to the barrel, or in the buttstock.
- Tubular Magazine
Simply, the discharging tube of a gun that dictates direction of travel of the projectile. The tubes are meticulously engineered and bored out to provide an exit path for the discharging shotshells. Once the projectile is fired, it’s guided through the barrel, out of the muzzle by the expanding gas forces.
Barrel
The business end of a shotgun (front end of the barrel) where the shotshell exits.
Muzzle.
Frequently referred to as a “Forestock”, this is the forward grip of a shotgun. On pump-actionshotguns, the fore-end slides back and forth to both load and unload (eject) shells to/ from the shotgun chamber(s).
Fore-end
A port to manually load shotshells into the tubular magazine.
- Loading Port.
A lever that is “pulled” or squeezed to initiate the firing sequence (discharge a shotshell).
- Trigger
The portion of a firearms frame (receiver) that wraps around the trigger, providing for additional protection and safety.
- Trigger Guard.
A mounted sight on a shotgun nearest the muzzle (front end); the sight is used in taking aim and target acquisition while firing the shotgun.
- Front Sight.
A mounted sight on a shotgun nearest to the stock (back end); the sight is used in taking aim and target acquisition as well as assisting the operator in identifying the front-sight while sequencing the firing of a gauge.
- Rear Sight.
A mechanism that is toggled to provide an extra safety measure; usually locks the trigger, hammer and bolt from commencing with the firing sequence of the shotgun, and ensuring prevention of a negligent discharge.
- Safety.
The area of a shotguns stock held by the operator’s rear most hand.
- Grip
Also referred to as a shoulder stock, buttstock, or a butt. The rearmost part of a shotgun, traditionally attached to the receiver or chassis, and held against one’s shoulder when firing the shotgun. The stock enables the shooter to firmly support the device and comfortably aim. The stock also helps manage the recoil between the receiver and operator’s body.
- Stock.
Attaches to the “Butt” of the shotgun; is the rear most end that is pressed directly against the operator’s shoulder and helps mitigate excessive recoil when the weapon is discharged.
- Recoil Pad.
The mechanical operation of a semi-automatic shotgun, uses the force generated by the last shot to automatically eject the empty shell and chamber the next shotshell after each trigger pull.
- The Action.
Refers to a mechanism traditionally located on the receiver on a semi/full automatic shotgun, used to release the bolt and or bolt carrier, allowing the weapon to be readied for firing.
- Bolt Release.
Is a mechanical lever on a semi-automatic shotgun which, when manipulated, results in the hammer beingcocked or locked in the firing position and ready to initiate the sequence of fire. The charging handle has a number of necessary functions; it facilitates the ejection of a spent or unfired shotshell from the chamber, it can load a shotshell from the tubular magazine, or drum, or by hand into the chamber; it clears a stoppage such as a jam, double feed, stovepipe or misfire; it verifies that the shotguns chamber is clear of any shotshells or other obstructions; it moves the bolt in to battery, acting as a forward assist; it releases a bolt locked to the rear, such as would be the case after firing the last shotshell of the shotgun equipped with a last-shotshell-hold-open feature.
- Operating Handle (Charging Handle).
Usually located near the trigger guard and acts as an unlocking mechanism allowing for the action bar and bolt to slide back and eject an undischarged chambered shotshell.
- Action Release.
