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A floating breech is a breechblock of a firearm that is not held rigidly to the barrel at the moment of firing, but instead is free to move in the opposite direction to the projectile. This can help to reduce the recoil induced in the body of the firearm so long as the subsequent motion of the breechblock is retarded in some manner - either by a spring, or by back-pressure against a piston attached to the breechblock provided by tapping the expelled propellant gases. The motion of the breech and/or the expansion of the expelled gases can also be used to power a case-ejection mechanism and/or reloading mechanism.
If the breechblock and barrel are locked for firing but the barrel is not fixed to the body, it is described as a floating action.
If the ammunition is caseless, the time required to expel the previous case is removed from the cycle time of an automatic firearm and a higher rate of fire can be obtained than with normal ammunition.
The Heckler & Koch G11 Assault rifle uses caseless ammunition, but has a rotating breech, not a floating breech. However, the barrel, breech and magazine as a whole 'float' within the housing of the weapon. Note that the breechblock in this firearm rotates about an axis perpendicular to the main axis of the barrel, whereas most other rotating breechblocks rotate about the same axis as the long axis of the barrel.
A floatingbreech is a breechblock of a firearm that is not held rigidly to the barrel at the moment of firing, but instead is free to move in the opposite...
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...
invented the floating chamber and the short-stroke gas piston. Both designs used the high-pressure gas generated in or near the breech of the firearm...
this prevents premature firing from the inertia of the firing pin as the breech mechanism closes in the reloading part of the firing cycle. Firing pins...
which plagued breech-loaders for decades.[citation needed] The weakness of the breech-loader was the obvious problem of sealing the breech. All guns are...
damaged or destroyed by a breech explosion potentially injuring the shooter and bystanders. Pipe guns use a free floating gun barrel with a rimmed cartridge...
the floating action. It acts through the rear pivot of the toggle lock. Pulling the cocking handle causes the toggle to rise. This unlocks the breech and...
mounting of heavy guns for this purpose. These were initially wrought iron breech-loading weapons known as basilisks. In 1489 he further contributed to the...
were used in warfare. In the early 16th century Turkish and Portuguese breech-loading swivel guns and matchlock firearms were incorporated into the Ming...
of powder used for the gun had likely been rammed farther into the gun breech and at a higher speed than designed (a so-called overram), resulting in...
lens. ULD glass, floating system and aspherical. 21 mm equivalent 50 mm f/4.5. Two versions exist, the non ULD and ULD L (contains floating element), the...
together by strong, rigid steel bars. The combined mass serves to hold the breech safely closed during firing, while keeping the center of gravity forward...
having a rope fastened under his arms and about his middle, and under his breech, is thus hois[t]ed up to the end of the yard; from whence he is again violently...
since it lowered the breech to a level just above the loading platform, and shells could be rolled right up to the open breech for loading and ramming...
Slesar Richard Kiley as Jim Derry, Richard Long as Eddie Breech, Anne Francis as Connie Breech October 25, 1963 (1963-10-25) A contract assassin meets...
developers needed to know if the rockets could be launched from a closed-breech launcher. This was the testing that was done at the Keweenaw Rocket Launch...
spring; upon firing, the barrel and slide do not have to unlock, as do locked-breech-design pistols. Blowback designs are simple and more accurate than designs...
The atakebune were armed with four at most (six if there were two smaller breech-loading swivel guns) cannons and numerous large-caliber arquebuses because...
design was also influenced by the Anglo-French development of ironclad floating batteries to bombard Russian forts during the same war. Gloire was designed...
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