#Parts of a riffle series#

The parts of a rifle's firing or trigger mechanism usually include the following parts: This performs the same function, but the striker is spring-loaded. In hammerless rifles, the striker substitutes for the firing pin. In hammer-fired rifles, the hammer drives the firing pin forward through the face of the bolt to crush and detonate the cartridge primer. The firing pin is a thin metal rod with a tapered and rounded point. It can operate in conjunction with, or independently of, the bolt or receiver.

It can be a spring-loaded pin in the face of the bolt (plunger), a fixed lug that passes through a slot in the bolt, or an arm that pivots. The ejector is a part that expels the cartridge case from the weapon- it’s necessary to clear and unload the gun. The extractor is necessary for the withdrawal of the cartridge from the chamber. The extractor is a hook or beak-like part in the bolt that snaps over the cartridge’s rim during chambering. If you're out looking for a great bolt carrier group, this is pretty much the buying guide that you need. The breechblock serves the same purposes as the bolt but cycles non-linearly-rolling, falling, or tilting to lock the breech. Locking positively secures the bolt behind the cartridge in the chamber to absorb the powder propellant explosion, maintaining pressure in the bore to drive the bullet. In locked-breech firearms, the bolt typically uses radial locking lugs and a camming system to rotate and engage corresponding recesses in the barrel extension or receiver. In blowback-operated semi-automatic firearms, the bolt keeps the breech closed by inertia - its mass is sufficient to resist opening until the pressure in the chamber drops to a safe level. In repeating rifles, the bolt feeds ammunition from the magazine into the firing chamber. Its purpose is to close or lock the breech and support the cartridge case head during firing. The bolt is typically a cylindrical or rectangular metal part that moves linearly inside the receiver or frame of a breechloading rifle.

This rotation stabilizes the bullet gyroscopically in flight, extending its effective range and accuracy considerably.Ī good rifle barrel should enhance your accuracy and performance with a good weight balance enough for you to be really comfortable shooting with your firearm. When a cartridge is fired, the bullet engages these rifling grooves, which causes it to spin.

#Parts of a riffle series#

Rifling is a series of helical grooves in the bore. At the barrel’s breech end is the firing chamber, a compartment that the manufacturer cuts or forms into the barrel to accept a particular cartridge. The front of the barrel is the muzzle, and the rear is the breech.

Its purpose is to accelerate, direct, and stabilize the bullet. The barrel is the metal tube through which the bullet is propelled. Rifles are available in various action types, from semi-automatic and bolt-action to lever- and pump-action. Modern military rifles fire relatively high-velocity cartridges and are capable of superior range and accuracy compared with handguns and shotguns. A rifle is a shoulder weapon with a rifled barrel.