Locked breech is the design of a breech-reloading firearm's action. This is important in understanding how a self-reloading firearm works. In the simplest terms, the locked breech is one way to slow down the opening of the breech of a self-reloading firearm when fired. The source of power for the movement is recoil.
Blowback actionRoller locking actionSig Sauer short recoil system
The principle of firing a projectile from a firearm is that when the propellant in a bullet's casing is ignited, the propellant burns quickly for a very short time. This creates a high-pressure pocket of gas that expands, pushing the projectile (bullet) out of the chamber and down the barrel of the firearm. If the high-pressure gas were not confined within certain parts of the weapon, it could damage the firearm or injure the shooter. A 'locked breech' barrel confines the high-pressure gas to the barrel, allowing the gas to expand and cool without risk of damaging weapon or shooter. Because of the pressure drop, a breech block can be opened in a self-reloading firearm due to the recoil inertia generation by the movement of the projectile.
Lockedbreech is the design of a breech-reloading firearm's action. This is important in understanding how a self-reloading firearm works. In the simplest...
A breechblock (or breech block) is the part of the firearm action that closes the breech of a breech loading weapon (whether small arms or artillery) before...
without grip safety. The Llama III was introduced with a grip safety, lockedbreech and continued to be made until 1954. It was made in the same calibre...
is a brand of polymer-framed, short recoil-operated, striker-fired, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer...
The Blish lock is a breechlocking mechanism designed by John Bell Blish based upon his assumption that under extreme pressures, certain dissimilar metals...
Recoil operation is an operating mechanism used to implement locked-breech autoloading firearms. Recoil operated firearms use the energy of recoil to...
9×17mm Short (.380 ACP) cartridge. The Beretta M1951 was Beretta's first locked-breech design on the market. (Previous Beretta semi-automatic pistols were...
32 mm (1.26 in) The short recoil, locked-breech Beretta 92 and short recoil and locked-breech, rotating barrel lock Beretta Px4 Compact designs both have...
1979, authored by Walter Ludwig). The Walther P5 is a recoil-operated, locked-breech, 9 mm semi-automatic pistol. It utilizes the same design principles...
1995 and features a double action only (DAO) trigger mechanism with a Lockedbreech recoil operated action. It was intended to address the police backup...
Walther PPQ is a short recoil-operated lockedbreech semi-automatic pistol that uses a modified Browning cam-lock system adapted from the Hi-Power pistol...
Self-Defense Forces and police. The Nambu pistol is a recoil operated, lockedbreech, semi-automatic pistol. The Type A and 14 Nambus have magazine capacities...
recoil-operated, locked-breech handgun that uses a modified Browning cam-lock system similar to the one from the Browning Hi-Power pistol. The firearm's locking mechanism...
(standing for "Lightweight Compact 9mm") is a 9mm caliber, recoil-operated, lockedbreech, hammer fired, semi-automatic pistol announced by Sturm, Ruger & Co...
produce. The first design was submitted to the German Army and featured a lockedbreech and a hidden hammer but the Army requested that it should be redesigned...
The Welin breech block was a revolutionary stepped, interrupted thread design for locking artillery breeches, invented by Axel Welin in 1889 or 1890....
Global Information
