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[[http://machineguns.us/|MACHINE GUNS]]

[[https://machineguns.us/|Machine guns]] are fully automatic firearms that continue to fire bullets as long as the trigger is depressed and ammunition is available. (https://machineguns.us/). The world's first fully automated machine guns were invented in the USA by Hiram Maxim in 1883 and patented two years later. Maxim's machine gun was first used during the Second Boer War (1899-1902) in South Africa and the Russo-Japanese War (1904-1905).

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Black Market Machine Guns

A [[https://machineguns.us/|machine gun]] is a mounted or portable firearm that operates fully automatically. Typically, it is designed to discharge rifle cartridges rapidly in succession from either an ammunition belt or a large-capacity magazine, often at several hundred rounds per minute. [[https://machineguns.us/|Machine guns]] were manually operated in earlier iterations, requiring actions such as turning a hand crank. According to United States law, the term "machine gun" specifically refers to any fully automatic firearm. In the context of U.S. legislation, a machine gun is defined by The National Firearms Act of 1934 as "… any weapon which shoots … automatically more than one shot, without manual reloading, by a single function of the trigger."

There exist two main definitions of the upper limit of caliber for machine guns:

caliber larger than 12.7 millimeters (mm) (.50 caliber)
	caliber larger than 20 mm

Larger-caliber automatic weapons are typically termed autocannons. However, there are instances where weapons around 15mm have been called either autocannons or machine guns, depending on their characteristics. Additionally, the distinction may be influenced by whether the gun fires conventional or explosive rounds.

[[https://machineguns.us/|Automatic weapons]] firing large-caliber explosive rounds are often classified as autocannons or automatic grenade launchers. [[https://machineguns.us/|Machine guns]] are characterized by a high ratio of barrel length to caliber, featuring an extended barrel for a relatively small caliber.

A machine gun is a fully automatic firearm, either mounted or portable, engineered to discharge rifle cartridges rapidly from an ammunition belt or large-capacity magazine, often achieving rates of several hundred rounds per minute. [[https://machineguns.us/|Machine guns]] were manually operated in earlier iterations, such as through hand cranks. In United States law, the term "machine gun" specifically denotes any fully automatic firearm, as defined by The National Firearms Act of 1934, which categorizes it as any weapon capable of firing automatically more than one shot without manual reloading, triggered by a single pull of the trigger.

Machine gun technology significantly advanced during the late 19th and early 20th centuries, proving devastating in colonial conflicts as colonial powers clashed with native peoples. Despite this, European military forces remained entrenched in traditional warfare ideologies, prioritizing the horse and individual soldier. However, the warfare landscape shifted dramatically during World War I with the introduction of machine guns, which revolutionized infantry tactics.

The overwhelming and indiscriminate firepower of machine guns rendered cavalry units obsolete and fundamentally reshaped the role of infantry, significantly enhancing their firepower with each machine gun unit. The ability of machine guns to saturate battlefields with lethal projectiles, enabling a small team to inflict mass casualties, further underscored the diminishing value placed on human life in modern warfare.

The development and production of [[https://machineguns.us/|machine guns]] in the late 19th century were initially motivated by the aim of deterring warfare by increasing the costs associated with conflict. However, this endeavor ultimately contributed to the ongoing escalation of weaponry throughout history. Rather than serving as a deterrent, machine guns represented just another milestone in the relentless advancement of military technology, eventually leading to the creation of atomic and hydrogen bombs in the mid-20th century. This trajectory of technological escalation persists today across various facets of military technology.
The History Of Machine Guns
The development of multi-shot weapons traces back to ancient times, with early designs dating back to the first century. Greek engineer Hero of Alexandria envisioned plans for a multi-shot arrow gun during this period, while Leonardo Da Vinci explored similar concepts in the 1400s.

Chinese engineers achieved notable success with the creation of the repeating crossbow. The renowned Zhuge Nu, more commonly known as the Chu-ko-nu in the West, is often credited to strategist Zhuge Liang of the second and third centuries, developed for the Kingdom of Shu during the Three Kingdoms period. However, archaeological evidence from a buried library in the ancient state of Chu suggests that designs for a repeating crossbow may have existed as early as the third century B.C.E.

While early precursors to [[https://machineguns.us/|machine guns]] emerged as far back as the 1700s, it wasn’t until the mid-nineteenth century that successful designs were realized. The Model 1862 Gatling gun, notable for its high fire and automatic loading rate, marked a significant advancement in machine gun technology when adopted by the United States Navy. Despite still relying on manual power, this innovation laid the groundwork for future developments.

The game-changer arrived with Hiram Maxim’s breakthrough concept, introducing recoil energy to automate reloading in his Maxim machine gun. This pivotal innovation revolutionized machine gun functionality. Concurrently, Dr. Gatling experimented with electric-motor-powered models, pioneering externally powered machine reloading?an approach that persists in modern weaponry.

In a nod to historical concepts, the Vandenburg and Miltrailleuse volleygun ideas have experienced a revival in the early twenty-first century. Modern iterations feature electronically controlled, multibarreled designs, exemplifying the enduring evolution of machine gun technology.

Indeed, the precise definition of a machine gun, the classification of volley guns within this category, and including earlier devices as machine guns are subjects of ongoing debate. The interpretation can vary depending on the language and specific definition. As such, consensus on these matters may differ, highlighting the nuanced nature of terminology and classification in firearms.
Early Rapid-Firing Of Machine Guns

One of the earliest predecessors of multi-shot weapons was invented by James Puckle, a London lawyer, who patented "The Puckle Gun" on May 15, 1718. This design featured a 1-inch caliber flintlock revolver cannon capable of firing 9 rounds before requiring reloading, primarily intended for naval use. Puckle claimed that it could fire round bullets at Christians and square bullets at Turks. However, despite its innovative design, it was never adopted or produced, which foreshadowed later revolver concepts.

During the early and mid-nineteenth century, rapid-firing weapons emerged, including semi-automatic firearms and volley guns such as the Mitrailleuse. These volley guns and double-barreled pistols replicated all firearm components, while pepperbox pistols utilized multiple barrels but only one hammer. Revolvers simplified this design further by employing a pre-prepared magazine with a single barrel and ignition mechanism, though they remained semi-automatic like the Puckle gun.

The coffee-mill gun, utilized during the Civil War, introduced automatic loading but retained a single barrel, distinguishing it functionally from modern machine guns as it was hand-powered rather than cartridges.

In 1861, Richard Jordan Gatling patented the [[https://www.nuwireinvestor.com/?s=Gatling|Gatling]] gun, which marked a significant advancement in automatic firearms. This design featured machine loading of prepared cartridges and a hand-operated crank for sequential high-speed firing, offering controlled, sequential automatic fire. Although initially limited in use during the American Civil War, various armies progressively refined and widely adopted Gatling guns until the early 1900s, when they were replaced by lighter and more cost-effective recoil-operated machine guns such as the Maxim gun. The Gatling’s multiple barrels enabled more sustained fire than early air-cooled, recoil-operated machine guns, but advancements in recoil-operated designs ultimately led to their obsolescence. It would be several decades before the concept of multi-barrel rapid-fire guns resurfaced in extremely high-rate-of-fire weapons such as miniguns and automatic aircraft cannons.
Maxim Machine Guns
The first true [[https://machineguns.us/|machine gun]], invented in 1881 by Hiram Maxim, revolutionized warfare with its innovative design. The "Maxim gun" utilized the recoil energy from the previously fired bullet to facilitate reloading, achieving a significantly higher fire rate than earlier hand-powered mechanisms. Maxim’s invention also incorporated water cooling, utilizing a water jacket around the barrel to mitigate overheating. Widely adopted and deployed on all fronts during World War I, the Maxim gun and its derivatives proved superior to earlier Gatling guns, requiring fewer crew members, being lighter, and more maneuverable.

Following the success of the Maxim gun, heavy weapons like the Vickers machine gun emerged alongside various other machine weapons in the early 20th century. World War I witnessed the debut of submachine guns such as the German MP18 and lighter machine guns like the Chauchat, which played pivotal roles in combat along with large-caliber machine guns. Despite artillery being the primary cause of casualties in the war, machine guns, combined with wire entanglements, earned a fearsome reputation on the battlefield.

The automatic mechanisms pioneered by machine guns also found application in handguns, giving rise to automatic pistols like the Borchardt in the 1890s and later submachine guns such as the Beretta 1918. Moreover, World War I saw the integration of machine guns into aircraft for the first time. Overcoming the challenge of firing through a moving propeller was addressed through various methods, including interrupter gears, reinforced propellers, or positioning guns on wings or with pusher propellers.

The evolution of machine guns unfolds across two distinct eras: the manual and automatic epochs, each marked by significant technological advancements. While manual multi-shot devices, including volley guns, trace back centuries, the refinement of manual and automatic machine guns primarily occurred in the latter half of the 19th century. Manual machine guns require human intervention for reloading and firing, typically involving mechanisms like hand cranks, contrasting with automatic variants where continuous firing is achieved by simply holding down a trigger. This shift to automatic operation significantly boosts the rate of fire, a defining characteristic of machine guns.

The American Civil War served as a pivotal battleground for the debut of manual machine guns, notably the Gatling gun and "coffee gun," both employing manually-powered automatic loading mechanisms fed by cartridges from a hopper. The Gatling gun, a rotary machine gun, emerged as a dominant force in the late 19th century, although various other manual designs, like the Nordenfelt machine gun, also found usage. The advent of the first automatic machine gun, the recoil-operated Maxim gun, revolutionized warfare by introducing linked (belt) ammunition and automatic loading, setting a precedent for subsequent semi and fully-automatic firearms in the 20th century.

Modern automatic machine guns predominantly operate via either gas or recoil mechanisms. The gas operation utilizes the gas generated from burning powder to cycle the action, exemplified by the Colt-Browning M1895. In contrast, recoil operation harnesses the energy from the ejecting bullet to cycle the action. Another, albeit less common, type is the externally-powered machine gun, where an alternative energy source like an electric motor replaces human or bullet energy. These variants, such as the Minigun and Chaingun, serve specific purposes and are prevalent on combat aircraft and vehicles. Nonetheless, the automatic, recoil-operated, and belt-fed machine gun remains the standard in modern arsenals for its reliability and versatility in combat scenarios.

Overview Of Modern Automatic Machine Guns
In contrast to [[https://machineguns.us/|semi-automatic firearms]], which necessitate a trigger pull for each bullet discharged, machine guns are engineered to fire continuously while the trigger remains depressed and ammunition is supplied. While civilians often use the term "machine gun" loosely to describe any fully automatic weapon, militarily, it denotes heavier weapons deployed with support mechanisms rather than handheld, enabling sustained or intermittent automatic fire for as long as ammunition permits. These weapons are primarily employed against lightly protected personnel or to provide suppressive fire.

Some machine guns can sustain suppressive fire for extended periods, while others may overheat after brief usage. Due to their tendency to become hot, most machine guns are designed to fire from an open bolt, allowing air cooling between bursts. They may incorporate barrel cooling systems or interchangeable barrels for continued operation.

Categorized as "light," "medium," "heavy," or "general purpose," machine guns typically surpass other automatic weapons in size and weight. Squad automatic weapons (SAWs), a variant of light machine guns, can be operated by a single individual, occasionally with assistance for carrying ammunition. Medium and heavy [[https://machineguns.us/product/us-ordinance-m60e6/|machine guns]] are often mounted on tripods or vehicles, requiring additional crew members for transport and support equipment.

While most [[https://machineguns.us/product/fn-p90/|machine guns]] are belt-fed, some light variants utilize drum or box magazines, and specific vehicle-mounted models are hopper-fed. Additionally, automatic weapons are classified based on bullet size and firing mechanism, distinguishing between closed-bolt and open-bolt systems. Firearms employing pistol-caliber ammunition are termed machine pistols or submachine guns. At the same time, selective-fire rifles with full-power or reduced-power rifle cartridges are respectively labeled automatic rifles or assault rifles.

Assault rifles, bridging the gap between submachine guns and traditional rifles, offer semi-automatic, burst, and fully automatic firing modes. However, the term "assault rifle" holds legal significance in states like California, where specific semi-automatic firearms are deemed "assault weapons" under state law. Nevertheless, proponents of gun rights view the term "assault weapon" pejoratively when applied to civilian firearms, a usage less prevalent outside the United States.

In ground combat, machine guns provide suppressive fire, compelling adversaries to seek cover and diminish their offensive capabilities, halting enemy advances, or facilitating safer engagements for friendly forces. Light machine guns often feature rudimentary iron sights, with a common aiming practice involving alternating solid and tracer rounds to aid in trajectory visualization and fire direction.

Many[[https://www.newworldencyclopedia.org/entry/Machine_gun| heavy machine guns]], such as the Browning M2 .50 caliber, demonstrate remarkable accuracy and can engage targets at significant distances. Notably, during the Vietnam War, Carlos Hathcock achieved a record long-distance shot of 7382 feet (2250 meters) using a .50 caliber heavy machine gun outfitted with a telescopic sight, prompting the development of .50 caliber anti-material sniper rifles like the Barrett M82.
Components Of Machine Guns
All machine guns share essential components to function effectively:

Feed System: This component loads cartridges into the chamber for firing. Cartridges are typically fed through magazines or ammunition belts, although various methods exist.
	Trigger Mechanism: Responsible for initiating the firing sequence, the trigger mechanism comprises the trigger itself, a sear to catch the bolt, a firing pin, and other associated parts. Pulling the trigger releases the sears, allowing the bolt to cycle continuously until the trigger is fired. A subsequent engagement of the sear halts the machine gun’s cycle.
	Extractor System: After firing, this system ejects spent or misfired cartridges. Typically straightforward, a pin on the bolt catches a ridge on the cartridge, expelling it through an ejection port.

These components collectively form a mechanism that requires a power source to operate effectively. Recoil-operated machine guns derive power from absorbing the recoil of a cartridge, while gas-actuated types utilize expanding gases from a fired cartridge. Alternatively, those powered by external forces, such as a motor, are called chain guns. Each method ensures the continuous and reliable operation of the machine gun in various conditions and contexts.
Operation Of Machine Guys
Machine guns adhere to a repetitive cycle consisting of the following stages:

Ejection: Expelling the spent cartridge through an ejection port to clear the chamber.
	Cocking: Preparing the trigger mechanism for subsequent firing by resetting its position.
	Loading: The next round is introduced into the firing chamber. This step often involves spring tension or a cam mechanism to drive the new round and bolt back into position.
	Firing: Activating the firing pin to ignite the cartridge, initiating the ejection and reloading sequence.

This cycle occurs rapidly, taking mere fractions of a second to complete, allowing for multiple repetitions per second. The fundamental operation remains consistent regardless of the method used to activate these mechanisms. Various examples illustrate this cycle in action, showcasing the versatility and efficiency of machine guns in multiple contexts and configurations.

Machine pistols and submachine guns, such as the "grease gun" from World War II, the MAC-10, and the Uzi, typically operate on the blowback principle.

Most assault rifles and squad automatic weapons utilize gas operations. Variants like the AR-15/M16 [[https://www.flickr.com/search/?q=integrate|integrate]] the piston with the bolt, while others, such as the AR18 and AK patterns, connect the piston to a bolt carrier that unlocks and operates the bolt.

Recoil-actuated machine guns, like the M2 .50 and Browning .50, rely on recoil to unlock and operate the action. These are identified by a substantial cocking lever used to feed the first round.

Externally actuated machine guns utilize external power sources such as electric motors or hand cranks to drive their mechanisms. Often referred to as chain guns, these weapons, like Gatling guns and revolver cannons, employ rotating carousels with multiple barrels or chambers and cam systems to load, cock, and fire each mechanism progressively. The continuous rotary action enables exceptionally high cyclic rates of fire, often exceeding several thousand rounds per minute. Chain guns boast enhanced reliability compared to gas- or recoil-operated counterparts, as the external power source facilitates the ejection of misfired rounds without issue. While primarily employed with large shells, typically 20 mm or more prominent, some, like the M134 minigun, utilize smaller cartridges. Despite their reliability and firepower advantages, the weight and size of the power source and driving mechanism render chain guns impractical for handheld use, primarily deployed in vehicles or aircraft mounts.

Heavy machine guns often incorporate features such as water cooling or interchangeable barrels to manage heat buildup. Regular barrel changes are necessary to prevent overheating, particularly with higher rates of fire. To mitigate this, air-cooled guns are typically fired in short bursts or at reduced rates to prolong barrel life.

Different machine guns employ distinct methods of igniting the primer. In blowback guns, seating the round also triggers ignition, while gas-operated and recoil-operated guns require a separate step in the firing sequence. Progressive-fire guns utilize cams to cycle the firing pin, while automatic cannons employ electrical ignition.

In weapons with round seats and fires simultaneously, precise mechanical timing is crucial to prevent premature firing, particularly in high-explosive ordnance like the 40 mm grenade launcher.

Machine guns are regulated by mechanical sears, which halt the bolt’s motion at various points. Some sears arrest the bolt when it locks to the rear, while others prevent the firing pin from advancing after the round is chambered.

Nearly all firearms feature a safety sear, which prevents trigger engagement for enhanced safety precautions.
Future Development of Machine Guns
The adequacy of existing designs has hampered conventional machine gun advancement for most purposes, although notable progress is being made in anti-armor and antimissile weaponry.

Electronically controlled machine guns boasting ultrahigh rates of fire, exemplified by Metal Storm’s weapons, may find niche applications. However, current small-caliber variants of this nature have seen limited use due to their weight limitations?too light for influential anti-vehicle roles yet too heavy, especially when factoring in ammunition requirements for individual soldiers. The trend toward increased reliability and decreased mass relative to power output is expected to persist.

One example is the XM214 minigun "six pack" developed by General Electric, featuring six barrels and firing at 4000 rounds per minute. Despite its impressive specs, this weapon weighs 85 pounds and offers limited penetration power, illustrating the challenges of balancing complexity, weight, and effectiveness in modern machine gun design.
Human Interface Of Machine Guns
The primary interface on machine guns typically consists of a pistol grip and trigger. In earlier manual variants, hand cranks were standard, while externally powered models like miniguns utilize electronic buttons or joystick triggers. Lighter machine guns often feature attached butt stocks, while mounted or tripod-mounted versions typically incorporate spade grips. Advancements in the late twentieth century saw increased use of scopes and complex optics, supplementing traditional iron sights.

Loading mechanisms in early manual machine guns often involved hopper-fed systems for loose cartridges, allowing rounds to be added while the weapon fired. Manual volley guns required manual reloading of all barrels simultaneously. This evolved into belt-fed systems, where belts were hand-held or in bags or boxes. Some modern vehicle-mounted machine guns employ linkless feed systems for streamlined operation.

Modern machine guns are typically mounted in one of four primary configurations. Firstly, a bipod setup is typical, often integrated with the weapon. This arrangement is prevalent on both light and medium machine guns. Alternatively, larger tripods provide stable support, particularly with medium and heavy [[https://www.google.com/|machine guns]]. Machine guns are typically affixed to pintle mounts on ships and aircraft, essentially steel posts connected to the frame, commonly accompanied by spade grips. Lastly, machine guns can be integrated into armament systems such as tank coaxials or aircraft installations, operated remotely and featuring sophisticated sighting systems, often employing electrical firing mechanisms.

Zusammenfassung

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