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If one single component of a firearm needed a replacement, the entire firearm either had to be sent to an expert gunsmith for custom repairs, or discarded and replaced by another firearm. During the 18th and early-19th centuries, the idea of replacing these methods with a system of interchangeable manufacture gradually developed.
Self-loading rifle; Shooting sticks (weapon mount) Sight (device) Sleeve gun; Slide stop; Sling (firearms) Slow match; Slug barrel; Sporterising; Squeeze bore; Stock (firearms) Stripper clip; Synchronization gear
A U.S. Army graphic detailing the competitors for the program as of December 2020. The Next Generation Squad Weapon (NGSW) program is a United States military program created in 2017 by the U.S. Army to replace the 5.56mm M4 carbine, the M249 SAW light machine gun, and the 7.62mm M240 machine gun, with a common system of 6.8mm cartridges and to develop small arms fire-control systems for the ...
Sear shown in a revolver action. In a firearm, the sear is the part of the trigger mechanism that holds the hammer, striker, or bolt back until the correct amount of pressure has been applied to the trigger, at which point the hammer, striker, or bolt is released to discharge the weapon.
7.62×39mm: The standard Soviet/ComBloc rifle round from the mid-1940s to the mid-1970s, this is easily one of the most widely distributed rounds in the world due to the distribution of the ubiquitous Kalashnikov AK-47 series. 7.62×51mm NATO: This was the standard NATO rifle round until its replacement by the 5.56×45mm. It is currently the ...
This refers to parts that are designed and manufactured such that they have a relatively tight-tolerances and high level of accuracy. Matchlock: An obsolete mechanism for discharging a firearm. Medium machine gun: A class of machine gun often defined as being designed for carry and use by multiple operators, firing a full-power rifle cartridge.
A parts kit is a collection of weapon (notably firearm) parts that, according to the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF), "is designed to or may be readily be assembled, completed, converted, or restored to expel a projectile by the action of an explosive."
A spare part, spare, service part, repair part, or replacement part, is an interchangeable part that is kept in an inventory and used for the repair or refurbishment of defective equipment/units. Spare parts are an important feature of logistics engineering and supply chain management, often comprising dedicated spare parts management systems.