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Auto Sear
An auto sear ("automatic sear") is a part of an automatic firearm that holds the hammer in the cocked position while the bolt of the weapon is cycling and releases the hammer/striker. It is basically an internal trigger actuated by the bolt/bolt carrier when placed in-battery. An auto sear is required in nearly every automatic rifle. An auto sear allows a semi-automatic gun to be converted into one capable of automatic firing with a single, continuous pull of the trigger. The Bureau of Alcohol, Tobacco, Firearms and Explosives The Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), commonly referred to as ATF, is a domestic law enforcement agency within the United States Department of Justice. Its responsibilities include the investigation and prevention ... designated any firearm capable of firing more than one round with a single operation of the trigger mechanism as a " machine gun", and the possession of such devices is illegal under United States federal l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sear (firearm)
In a firearm, the sear is the part of the trigger (firearms), trigger mechanism that holds the Hammer_(firearm), hammer, Firing pin, striker, or Bolt (firearms), 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. The sear may be a separate part or can be a surface incorporated into the trigger. Sear mechanisms are also frequently employed in archery release aids. Description As one firearms manufacturer notes: Sear: A sharp bar, resting in a notch (or in British: "bent") in a hammer (or in British: "tumbler"), holding the hammer back under the tension of the mainspring. When the trigger is pulled, the sear moves out of its notch, releasing the hammer and firing the gun. The term "sear" is sometimes incorrectly used to describe a complete trigger group. Within a trigger group, any number of sears may exist. For example, a Ruger Blackhawk single-action revolver cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Firearm
An automatic firearm or fully automatic firearm (to avoid confusion with semi-automatic firearms) is a self-loading firearm that continuously Chamber (firearms), chambers and fires Cartridge (firearms), rounds when the trigger (firearms), trigger mechanism is actuated. The action (firearms), action of an automatic firearm is capable of harvesting the excess energy released from a previous discharge to feed a new ammunition cartridge (firearms), round into the chamber (firearms), chamber, and then igniting the propellant and discharging the projectile (either bullet, shot (pellet), shot, or shotgun slug, slug) by delivering a hammer (firearms), hammer or firing pin, striker impact on the primer (firearms), primer. If ''both'' the feeding and ignition procedures are automatically cycled, the weapon will be considered "fully automatic" and will fire continuously as long as the trigger is kept depressed and the ammunition feeding (either from a magazine (firearms), magazine or a belt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammer (firearms)
The hammer is a part of a firearm that is used to strike the percussion cap/ primer, or a separate firing pin, to ignite the propellant and fire the projectile. It is so called because it resembles a hammer in both form and function. The hammer itself is a metal piece that forcefully rotates about a pivot point. The term tumbler can refer to a part of the hammer or a part mechanically attached to the pivot-point of the hammer, depending on the particular firearm under discussion (see half-cock). According to one source the term tumbler is synonymous with hammer. Evolution In the development of firearms, the flintlock used flint striking steel to produce sparks and initiate firing by igniting the gunpowder used as a propellant. The flint was fixed to a swinging arm called the ''cock''. Prior to firing, the cock was held rearward under spring tension. Pulling the trigger allowed the cock to rotate forward at a speed sufficient to produce sparks when it struck the steel frizzen. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolt (firearms)
Bolt from a Karabiner 98k bolt-action rifle. Note the curved handle on the side for manual operation thumb"> Slide locked back on a Desert Eagle pistol, showing the gas-operated rotating bolt mechanism A bolt is the part of a repeating, breechloading firearm that blocks the rear opening (breech) of the barrel chamber while the propellant burns, and moves back and forward to facilitate loading/unloading of cartridges from the magazine. The firing pin and extractor are often integral parts of the bolt. The terms " breechblock" and "bolt" are often used interchangeably or without a clear distinction, though usually, a bolt is a type of breechblock that has a nominally circular cross-section. In most automatic firearms that use delayed blowback, recoil, or gas operation, the bolt itself is housed within the larger bolt carrier group (BCG), which contains additional parts that receives rearward push from a gas tube ( direct impingement) or a gas piston (short-stroke o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Rifle
An automatic rifle is a type of Self-loading rifle, autoloading rifle that is capable of fully automatic firearm, automatic fire. Automatic rifles are generally selective fire, select-fire weapons capable of firing in Semi-automatic firearm, semi-automatic and automatic firing modes (some automatic rifles are capable of Burst mode (weapons), burst-fire as well). Automatic rifles are distinguished from semi-automatic rifles in their ability to fire more than one shot in succession once the trigger is pulled. Most automatic rifles are further subcategorized as battle rifles or assault rifles. History Maxim In June 1883 Hiram Maxim filed his first patent to do with automatic firearms covering semi-automatic and fully automatic Winchester rifle, Winchester and Martini-Henry rifles as well as an original automatic rifle and blowback- and recoil-operated machine guns, both single and multi-barrelled. Mannlicher In 1885 Ferdinand Mannlicher made an experimental self-loader based on wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-automatic Gun
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 A repeating firearm or repeater is any firearm (either a handgun or long gun) that is designed for multiple, repeated firings before the gun has to be reloaded with new ammunition. Unlike single-shot firearms, which can only hold and fire a sin ... whose firearm action, action mechanism automatically loads a following round of cartridge (firearms), cartridge into the chamber (firearms), chamber and prepares it for subsequent firing, but requires the shooter to manually actuate the Trigger (firearms), trigger in order to discharge each shot. Typically, this involves the weapon's action utilizing the excess energy released during the preceding shot (in the form of recoil or high-pressure gas expanding within the gun barrel#Bore, bore) to unlock and move the bolt (firearms), bolt, extracti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
