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Recoil operation is a mechanism for autoloading firearms that uses the energy of recoil to cycle the action. Learn about the different types of recoil operation (long and short), their history, and how they work with cartridges and springs.
Recoil is the rearward thrust generated when a gun is fired, due to conservation of momentum and energy. Learn how recoil affects different types of guns, how it is mitigated by buffers, muzzle devices and human body, and how it is measured by impulse and kinetic energy.
Learn about the different types of actions in firearms terminology, such as single-shot, dropping block, pivoting block, falling block, rolling block, hinged block, break action, and bolt action. See diagrams and examples of each action type and their historical and modern applications.
The usual recoil system in modern quick-firing guns is the hydro-pneumatic recoil system. In this system, the barrel is mounted on rails on which it can recoil to the rear, and the recoil is taken up by a cylinder which is similar in operation to an automotive gas-charged shock absorber, and is commonly visible as a cylinder mounted parallel to ...
Blowback is a system of operation for self-loading firearms that uses the gas pressure of the cartridge case to move the bolt. Delayed blowback is one of the categories of blowback, where the bolt is not opened until the bullet leaves the barrel.
The Beretta Px4 Storm is a semi-automatic pistol for personal defense and law enforcement use. It has a polymer frame, a Picatinny rail, and a rotating barrel lock system. It comes in full size, Compact, and Subcompact versions and different calibers.
The Barrett M82 is a semi-automatic rifle chambered for the .50 BMG cartridge, designed for anti-materiel and anti-personnel purposes. It has been used by various military and paramilitary groups, such as the Provisional IRA and Mexican drug cartels, and has a range of up to 1,800 metres.
Locked breech is a design of a breech-reloading firearm's action that uses recoil to slow down the opening of the breech. Learn about different types of locked breech actions, such as short recoil, roller locking, and tilting barrel, and see examples of handguns and rifles that use them.