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Pipe guns use a free floating gun barrel with a rimmed cartridge (usually a shotgun shell) inserted in the breech, sliding within a pipe functioning as a tubular receiver with a fixed firing pin in the back. No trigger or lockwork is required, because the loaded barrel is simply inserted into the pipe and slammed backward to fire. [7]
Improvised versions are made by using two pipes and an end-cap; they usually fire shotgun shells. To fire the gun, the user inserts a shotgun shell into the smaller diameter pipe, places the smaller pipe into the larger diameter pipe, and forcefully slides it back until the shell's primer makes contact with a fixed firing pin located inside the ...
The Ithaca 37, also known as the Ithaca Model 37, is a pump-action shotgun made in large numbers for the civilian, law enforcement and military markets. Based on a 1915 patent by firearms designer John Browning for a shotgun initially marketed as the Remington Model 17, it utilizes a novel combination ejection/loading port on the bottom of the gun which leaves the sides closed to the elements.
The long-barreled training guns were marked in the same manner as riot guns and were mainly used for aerial gunnery training. Total wartime production of all Model 520-30 shotguns was 33,306 and all Model 620 shotguns were 12,174. [20] After the war, the US military standardized both the Model 520-30 and the Model 620 and kept them in the ...
The potential for slam fire when clearing jams was not the only flaw in the 1911's design. The system of buffer rings used to reduce the recoil (two fiber washers [6]) when the weapon was fired often failed. The breakdown of these rings greatly increased the recoil when a round was fired. The gun's "hammering recoil" caused many a stock to ...
The SPAS-12 was designed from the ground up as a rugged military shotgun, and it was named the Special Purpose Automatic Shotgun. In 1990, Franchi renamed the shotgun the Sporting Purpose Automatic Shotgun, which allowed continued sales to the United States as a limited-magazine-capacity, fixed-stock model until 1994.
If a round is chambered with the firing pin locked forward it's possible the shotgun may fire, resulting in an unintentional discharge or "slam fire". Remington continued production of Model 887 shotguns as the issue wasn't inherent to the 887 design, stating that the problem was due to some flawed components that were put into production firearms.
The Model 1897 was an evolution of the Winchester Model 1893 designed by John Browning. The Model 97 is a hammered shotgun lacking a trigger disconnect giving it the ability to slam fire. This means that the user can hold the trigger down while pumping the shotgun and once the pump is returned to the forward position the gun fires.[3]