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Rolling-block breech Joseph Rider's 1865 patent drawings. A rolling-block action is a single-shot firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin. [1]
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A rifle is a long gun that has riflings (spiral grooves) machined into the bore (inner) surface of its barrel, imparting a gyroscopically stabilizing spin to the bullets that it fires. A descendant of the musket, rifles produce a single point of impact with each firing with a long range and high accuracy.
Ruger 10/22 - .22 Long Rifle SKS Type 56 - 7.62×39mm Colt AR-15 SP1 - .223 Remington Drawing of the Mannlicher 1885 semi-automatic rifle by Ferdinand Mannlicher, one of the earliest semi-automatic rifle designs. Prague Castle Guard carrying the Czechoslovak vz. 52 rifle
The converted rifles received a new breechblock/receiver assembly, but retained the original iron barrel, furniture, lock, and hammer. The Mark III rifles were newly made. They featured steel barrels which were so marked, flat nosed hammers, and a latch-locking breech block instead of the simple integral block lifting tang.
Drawing from Erskine S. Allin's patent for the Springfield Model 1865's trapdoor mechanism. The trapdoor mechanism employed a hinged breechblock that rotated up and forward, resembling the movement of a trapdoor, to open the breech of the rifle and permit insertion of a cartridge. The hinged breechblock caused these rifles to be named "Trapdoor ...
Today, bolt-action rifles are chiefly used as hunting and target rifles. These rifles can be used to hunt anything from vermin to deer and to large game, especially big game caught on a safari, as they are adequate to deliver a single lethal shot from a safe distance. Target shooters favour single-shot bolt actions for their simplicity of ...
One of the most common single-action rifles would be the New England Firearms' inexpensive break-open rifles, which are built on their 12 gauge break-open shotgun actions. The rifles, however, are made on a heat-treated steel action, and the shotgun actions are not heat-treated. Any rifle frame may accept rifle or shotgun barrels.