![Remington 760](https://upload.wikimedia.org/wikipedia/commons/2/2e/Remington_760.png)
Pump action or slide action is a
repeating firearm
A repeating firearm or repeater is any firearm (either a handgun or long gun) that is capable of being fired repeatedly before having to manually reload new ammunition into the weapon.
Unlike single-shot firearms, which can only hold and fire o ...
action
Action may refer to:
* Action (narrative), a literary mode
* Action fiction, a type of genre fiction
* Action game, a genre of video game
Film
* Action film, a genre of film
* ''Action'' (1921 film), a film by John Ford
* ''Action'' (1980 fil ...
that is operated manually by moving a sliding
handguard
A barrel shroud is an external covering that envelops (either partially or full-length) the barrel of a firearm, to prevent unwanted direct contact with the barrel (e.g. accidental collision with surrounding objects, or the user accidentally tou ...
on the gun's
forestock
In firearms, the forearm (also known as the fore-end/forend, handguard or forestock) is a section of a gunstock between the receiver and the muzzle. It is used as a gripping surface to hold the gun steady, and is usually made out of heat-in ...
. When
shooting
Shooting is the act or process of discharging a projectile from a ranged weapon (such as a gun, bow, crossbow, slingshot, or blowpipe). Even the acts of launching flame, artillery, darts, harpoons, grenades, rockets, and guided missiles can ...
, the sliding forend is pulled rearward to eject any expended
cartridge
Cartridge may refer to:
Objects
* Cartridge (firearms), a type of modern ammunition
* ROM cartridge, a removable component in an electronic device
* Cartridge (respirator), a type of filter used in respirators
Other uses
* Cartridge (surname), a ...
and typically to cock the
hammer
A hammer is a tool, most often a hand tool, consisting of a weighted "head" fixed to a long handle that is swung to deliver an impact to a small area of an object. This can be, for example, to drive nails into wood, to shape metal (as w ...
/
striker, and then pushed forward to load (''chamber'') a new cartridge into the
chamber
Chamber or the chamber may refer to:
In government and organizations
* Chamber of commerce, an organization of business owners to promote commercial interests
*Legislative chamber, in politics
* Debate chamber, the space or room that houses delib ...
. Most pump-action firearms use an integral
tubular magazine
A magazine is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges with ...
, although some do use detachable
box magazine
A magazine is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges withi ...
s. Pump-action is typically associated with
shotgun
A shotgun (also known as a scattergun, or historically as a fowling piece) is a long gun, long-barreled firearm designed to shoot a straight-walled cartridge (firearms), cartridge known as a shotshell, which usually discharges numerous small p ...
s, although it has been used in
rifle
A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...
s and other firearms as well.
Because the forend is manipulated usually with the support hand, a pump-action gun is much faster than a
bolt-action
Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed).
Most bolt-action ...
and somewhat faster than a
lever-action
The toggle-link action used in the iconic Winchester Model 1873 rifle, one of the most famous lever-action firearms
Lever-action is a type of action for repeating firearms that uses a manually operated cocking handle located around the trigger g ...
, as it does not require the
trigger
Trigger may refer to:
Notable animals and people
;Mononym
* Trigger (horse), owned by cowboy star Roy Rogers
;Nickname
* Trigger Alpert (1916–2013), American jazz bassist
* "Trigger Mike" Coppola (1900–1966), American gangster
;Surname
* Bru ...
hand to be removed from the trigger while reloading. Also because the action is cycled in a linear fashion, it creates less
torque
In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of th ...
that can tilt and throw the gun off aim when repeat-firing rapidly.
History
The first slide action patent was issued to Alexander Bain of Britain in 1854.
Many older pump-action shotguns can be fired faster than modern ones, as they often did not have a
trigger disconnector
Close-up shot of a safety of an M16A2 rifle
In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling.
Safeties can generally be divided into subtypes suc ...
, and were capable of firing a new round as fast as the pump action was cycled, with the trigger held down continuously. This technique is called a
slamfire
A slamfire is a discharge of a firearm occurring as a cartridge is being loaded into the chamber. Some firearms are designed to slamfire, but the term also describes a malfunction of self-loading firearms. Shooters accustomed to firearms requiring ...
, and was often used in conjunction with the
M1897 in the First World War's trench warfare.
Modern pump-action designs are a little slower than a
semi-automatic shotgun
A semi-automatic shotgun is a repeating shotgun with a semi-automatic action, i.e. capable of automatically chambering a new shell after each firing, but requires individual trigger-pull to manually actuate each shot. Semi-automatic shotguns ...
, but the pump-action offers greater flexibility in selection of
shotshell
A shotgun shell, shotshell or simply shell is a type of rimmed, cylindrical (straight-walled) cartridges used specifically in shotguns, and is typically loaded with numerous small, pellet-like spherical sub-projectiles called shot, fired throu ...
s, allowing the shooter to mix different types of loads and for using low-power or specialty loads. Semi-automatic shotguns must use some of the energy of each round fired to cycle their actions, meaning that they must be loaded with shells powerful enough to reliably cycle. The pump-action avoids this limitation. In addition, like all manual action guns, pump-action guns are inherently more reliable than semi-automatic guns under adverse conditions, such as exposure to dirt, sand, or climatic extremes. Thus, until recently, military combat shotguns were almost exclusively pump-action designs.
Disadvantages
Like most lever-action rifles, most pump-action shotguns and rifles use a fixed tubular
magazine
A magazine is a periodical publication, generally published on a regular schedule (often weekly or monthly), containing a variety of content. They are generally financed by advertising, purchase price, prepaid subscriptions, or by a combinatio ...
. This makes for slow reloading, as the
cartridges have to be inserted individually into the firearm. However, some pump-action shotguns and rifles, including the Russian
Zlatoust RB-12
The Bandayevsky RB-12 (Cyrillic: Ружьё Бандаевского РБ-12 – Ruzh'yo Bandayevskogo RB-12) is a shotgun of Russian origin. The weapon is a slide-action (pumped forward) shotgun and comes with a folding stock. The gun is designe ...
, Italian
Valtro PM5
The Valtro PM-5 is a 12 gauge Italian pump-action shotgun developed and manufactured by Valtro. The PM-5 has a removable magazine, and it is available with either a fixed or a folding stock.
Variants
* Valtro PM-5
* Valtro PM-5-350
Users
* ...
, American
Remington 7600
The Remington Model 7600 is a series of pump-action centerfire rifles made by Remington Arms. The Model 7600 is a progression from the original Model 760 pump-action rifle which Remington produced from 1952 to 1981. Production of the Model Six be ...
series, and the Mossberg 590M, use detachable box magazines.
Layout
A pump-action firearm is typically fed from a tubular magazine underneath the barrel, which also serves as a guide to the movable forend. The rounds are fed in one by one through a port in the receiver, where they are pushed forward. A latch at the rear of the magazine holds the rounds in place in the magazine until they are needed. If it is desired to load the gun fully, a round may be loaded through the ejection port directly into the chamber, or cycled from the magazine, which is then topped off with another round. Pump shotguns with detachable box magazines or even drums exist, and may or may not allow the magazine to be inserted without stripping the top round.
Operating cycle
Nearly all pump-actions use a back-and-forward motion of the forend to cycle the action. The forend is connected to the bolt by one or two bars; two bars are considered more reliable because it provides symmetric forces on the bolt and pump and reduces the chances of binding. The motion of the bolt back and forth in a tubular magazine model will also operate the ''elevator'', which lifts the shells from the level of the magazine to the level of the barrel.
After firing a round, the bolt is unlocked and the forend is free to move. The shooter pulls back on the forend to begin the operating cycle. The bolt unlocks and begins to move to the rear, which extracts and ejects the empty shell from the chamber, cocks the hammer, and begins to load the new shell. In a tubular magazine design, as the bolt moves rearwards, a single shell is released from the magazine, and is pushed backwards to come to rest on the elevator.
As the forend reaches the rear and begins to move forward, the elevator lifts up the shell, lining it up with the barrel. As the bolt moves forward, the round slides into the chamber, and the final portion of the forend's travel locks the bolt into position. A pull of the trigger will fire the next round, where the cycle begins again.
Most pump-action firearms do not have any positive indication that they are out of ammunition, so it is possible to complete a cycle and have an empty chamber. The risk of running out of ammunition unexpectedly can be minimized in a tubular magazine firearm by topping off the magazine by loading new rounds to replace the rounds that have just been fired. This is especially important when hunting, as many locations have legal limits on the magazine capacity: for example, three rounds for shotguns and five rounds for rifles.
The
BSA Machine Carbine used a unique pump-action that also required twisting the handguard.
Another variant was the
Burgess Folding Shotgun __NOTOC__
Burgess may refer to:
People and fictional characters
* Burgess (surname), a list of people and fictional characters
* Burgess (given name), a list of people
Places
* Burgess, Michigan, an unincorporated community
*Burgess, Missouri, Un ...
from the late 19th century where instead of manipulating the forend to cycle the action, it had a sleeve around the grip area of the stock which the shooter would slide back and forward to cycle the gun. This was done because the forend based pump action was under patent at the time.
Shotguns
Pump-action shotguns, also called pump shotguns, slide-action repeating shotguns or slide-action shotguns are the most commonly seen pump-action firearms. These
shotgun
A shotgun (also known as a scattergun, or historically as a fowling piece) is a long gun, long-barreled firearm designed to shoot a straight-walled cartridge (firearms), cartridge known as a shotshell, which usually discharges numerous small p ...
s typically use a
tubular magazine
A magazine is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges with ...
underneath the
gun barrel
A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pressure ...
to hold the
shell
Shell may refer to:
Architecture and design
* Shell (structure), a thin structure
** Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses
** Thin-shell structure
Science Biology
* Seashell, a hard o ...
s, though there are some variants that use a
box magazine
A magazine is an ammunition storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges withi ...
like most rifles. It's not uncommon to see extra ammunition stored in externally mounted "shell holder" racks (usually as "sidesaddle" on one side of the
receiver, or on the
buttstock
A gunstock or often simply stock, the back portion of which is also known as a shoulder stock, a buttstock or simply a butt, is a part of a long gun that provides structural support, to which the barrel, action, and firing mechanism are attached ...
) for quick on-field reloading. The shells are chambered and extracted by pulling/pushing the sliding
fore-end enveloping the tubular magazine toward the user.
In modern shotguns, the fore-end can be replaceable and often include
picatinny rails or
M-LOK
M-LOK, for Modular Lock, is a firearm rail interface system developed and patented by Magpul Industries. The license is free-of-charge, but subject to an approval process.
M-LOK allows for direct accessory attachment onto the "negative s ...
for mounting accessories such as a
tactical light
A tactical light is a flashlight used in conjunction with a firearm to aid low-light target identification, allowing the marksman, law enforcement officer or soldier to simultaneously aim a weapon and illuminate the target. Tactical lights can ...
, and the traditional straight grip might be replaced with a
pistol grip
On a firearm or other tools, a pistol grip is a distinctly protruded handle underneath the main mechanism, to be held by the user's hand at a more vertical (and thus more ergonomic) angle, similar to the how one would hold a conventional pist ...
for a more stable control.
Trigger disconnectors
Modern pump shotgun designs, such as the
Remington 870
The Remington Model 870 is a pump-action shotgun manufactured by Remington Arms Company, LLC. It is widely used by the public for shooting sports, hunting and self-defense, as well as by law enforcement and military organizations worldwide.
De ...
and
Mossberg 500
The Mossberg 500 (M500) is a series of pump action shotguns manufactured by O.F. Mossberg & Sons. The 500 series comprises widely varying models of hammerless repeaters, all of which share the same basic receiver and action, but differ in bore ...
, have a safety feature called a trigger disconnector, which disconnects the trigger from the
sear
The Sahar Elevated Access Road, abbreviated to SEAR, is a dedicated, elevated, express access road in Mumbai that connects the Western Express Highway (WEH) near Hanuman Nagar junction in Vile Parle, with the forecourts of Terminal T2 of the C ...
as the bolt moves back, so that the trigger must be released and pulled again to fire the shotgun after it closes. Many early pump shotguns, such as the
Winchester 1897, did not have trigger disconnectors, and would, if the trigger were held back, fire immediately upon closing.
Due to the higher rate of fire that this allows, some shooters prefer models without this feature, such as the
Ithaca 37
The Ithaca 37 (or Model 37) is a pump-action shotgun made in large numbers for the civilian, law enforcement and military markets. Based on a 1915 patent by firearms designer John Browning for a shotgun initially marketed as the Remington Model ...
,
Stevens Model 520/620,
and
Winchester Model 12
The Winchester Model 1912 (also commonly known as the Model 12, or M12) is an internal-hammer pump-action shotgun with an external tube magazine. Popularly named the ''Perfect Repeater'' at its introduction, it largely set the standard for pump-a ...
.
Rifles
![Colt-_Lightning_](https://upload.wikimedia.org/wikipedia/commons/9/95/Colt-_Lightning_.22_Rifle.jpg)
When used in
rifle
A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...
s, this action is also commonly called a slide action or more commonly referred to in the 19th century as a trombone action.
Colt
Colt(s) or COLT may refer to:
*Colt (horse), an intact (uncastrated) male horse under four years of age
People
* Colt (given name)
*Colt (surname)
Places
*Colt, Arkansas, United States
*Colt, Louisiana, an unincorporated community, United States ...
manufactured the
Colt Lightning Carbine
The Colt Lightning Carbine or Colt Lightning Rifle was a slide-action (pump-action) rifle manufactured by Colt from 1884 until 1904 and was originally chambered in .44-40 caliber. Colt eventually made the Lightning Rifle in three different ...
from 1884 to 1904 chambered in
.44-40
The .44-40 Winchester, also known as .44 Winchester, .44 WCF (Winchester Center Fire), and .44 Largo (in Spanish-speaking countries) was introduced in 1873 by the Winchester Repeating Arms Company. It was the first metallic centerfire cartridge ma ...
caliber.
The slide action
Winchester Model 1890 chambered in
.22 .22 caliber, or 5.6 mm caliber, refers to a common firearms bore diameter of 0.22 inch (5.6 mm).
Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington / 5.56×45mm NATO.
.22 inch is also a popular ...
caliber was one of the most successful repeating rimfire rifle made by
Winchester
Winchester is a City status in the United Kingdom, cathedral city in Hampshire, England. The city lies at the heart of the wider City of Winchester, a local government Districts of England, district, at the western end of the South Downs Nation ...
. Approximately 849,000 Model 1890 rifles were produced between 1890 and 1932. Later pump-action rifles were also manufactured by Winchester,
Marlin
Marlins are fish from the family Istiophoridae, which includes about 10 species. A marlin has an elongated body, a spear-like snout or bill, and a long, rigid dorsal fin which extends forward to form a crest. Its common name is thought to deri ...
,
Browning and
Remington
Remington may refer to:
Organizations
* Remington Arms, American firearms manufacturer
* Remington Rand, American computer manufacturer
* Remington Products, American manufacturer of shavers and haircare products
* Remington College, American c ...
.
A "reverse pump-action" design can sometimes be found, where the extraction is done by pushing the fore-end forwards, and re-chambered by pulling backwards. One such 21st-century variant is the
Krieghoff
H. Krieghoff GmbH is a German manufacturer of high-end hunting and sporting firearms, based in Ulm, Germany.
In North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hem ...
Semprio "in-line
repeating rifle A repeating rifle is a single- barreled rifle capable of repeated discharges between each ammunition reloads. This is typically achieved by having multiple cartridges stored in a magazine (within or attached to the gun) and then fed individually i ...
". The Semprio is a reverse pump-action system that ejects cartridges when the
fore-end is pushed forward and loads the chamber when pulled backward. The Semprio's 7-lug
bolt head
Bolt Head is a National Trust headland on the South Coast of Devon, England, United Kingdom, situated west of the Kingsbridge Estuary. ...
design displays a locking surface of compared to the of the
Mauser M98
Mauser, originally Königlich Württembergische Gewehrfabrik ("Royal Württemberg Rifle Factory"), was a German arms manufacturer. Their line of bolt-action rifles and semi-automatic pistols has been produced since the 1870s for the German arm ...
bolt-action rifle
Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt (firearms), bolt via a cocking handle, bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are r ...
.
Airguns
The term ''pump-action'' can also be applied to various
airsoft
Airsoft is a team game in which participants eliminate opposing players by tag (game), tagging them out of play with airsoft pellets, spherical plastic projectiles shot with mock air gun, air weapons(usually powered by an electronic motor) call ...
guns and
air gun
An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chemica ...
s, which use a similar mechanism to both load a pellet and compress a spring piston for power, or pneumatic guns where a pump is used to compress the air used for power. See the
airgun
An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chem ...
article for information on how spring piston and pneumatic airguns work.
Grenade launchers
![Grenade-launcher-GM-94](https://upload.wikimedia.org/wikipedia/commons/b/b9/Grenade-launcher-GM-94.jpg)
The 43mm
GM-94 is a pump-action
grenade launcher
A grenade launcher is a weapon that fires a specially-designed large-caliber projectile, often with an explosive, smoke or gas warhead. Today, the term generally refers to a class of dedicated firearms firing unitary grenade cartridges. The mos ...
developed by the
KBP design bureau for use by
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
n
special forces
Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...
. It carries three rounds in an above-the-barrel tubular magazine.
Another pump-action grenade launcher is the
China Lake grenade launcher, which saw usage by the
U.S. Navy SEALS
The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting sm ...
in the Vietnam War in limited numbers.
See also
*
List of pump-action rifles
A pump-action rifle is a rifle where the forend can be moved forward and backward in order to eject a spent round of ammunition and to chamber a new one. Pump-action mechanisms are often regarded as faster than a bolt action and somewhat faster ...
Other long gun actions
*
Single-shot
Single-shot firearms are firearms that hold only a single round of ammunition, and must be reloaded manually after every shot. The history of firearms began with single-shot designs, then multi-barreled designs appeared, and eventually many ce ...
**
Break-action
**
Rolling block
A rolling-block action is a form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin. The breechblock is shaped like a section of a circle.
The breechblock is locked into place by ...
**
Falling block
A falling-block action (also known as a sliding-block or dropping-block action) is a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon and is actuated by a lever.
Descri ...
*
Repeating
**
Revolving
**
Bolt-action
Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed).
Most bolt-action ...
**
Lever-action
The toggle-link action used in the iconic Winchester Model 1873 rifle, one of the most famous lever-action firearms
Lever-action is a type of action for repeating firearms that uses a manually operated cocking handle located around the trigger g ...
**
Self-loading
A semi-automatic firearm, also called a self-loading or autoloading firearm (fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism ''automatically'' loads a follow ...
(
semi-
Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and many other languages, they are used to coin numerous series of words. For example:
* unicycle, bicycle, tricycle (1-cycle, 2-cycle, 3-cyc ...
/
fully automatic
An automatic firearm is an auto-loading firearm that continuously chambers and fires rounds when the trigger mechanism is actuated. The action of an automatic firearm is capable of harvesting the excess energy released from a previous discharge ...
,
select fire
Selective fire is the capability of a weapon to be adjusted to fire in semi-automatic, fully automatic, and/or burst mode. The modes are chosen by means of a selector switch, which varies depending on the weapon's design. Some selective-fire we ...
)
***
Recoil operation
Recoil operation is an operating mechanism used to implement locked breech, autoloading firearms. Recoil operated firearms use the energy of recoil to cycle the action, as opposed to gas operation or blowback operation using the pressure of the p ...
***
Blowback
***
Blow-forward
Blow-forward is a firearm action where the propellant gas pressure and the friction of the bullet traveling down the bore drag the whole gun barrel forward to facilitate the opening of the breech. This forward barrel motion provides most ...
***
Gas operation
Gas-operation is a system of operation used to provide energy to operate locked breech, autoloading firearms. In gas-operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to dispose of the spent ...
References
{{DEFAULTSORT:Pump-Action
Firearm actions
Pump-action shotguns