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A gas trap system involves "trapping" combustion gas as it leaves the muzzle. This gas impinges on a surface that converts the energy to motion that, in turn, cycles the action of the firearm. As the resulting motion is forward toward the muzzle of the gun, some sort of mechanical system is needed to translate this into the rearward motion ...
A trap primer (or trap seal primer) is a plumbing device or valve that adds water to traps.The water seals in traps are needed to prevent sewer gases from entering buildings, but because this water is exposed to the air, it is subject to evaporation over time in infrequently used floor drains, leading to the release of sewer gas into the environment.
Springfield Model 1866 breech. The Springfield Model 1866 was the second iteration of the Allin-designed trapdoor breech-loading mechanism. Originally developed as a means of converting rifle muskets to breechloaders, the Allin modification ultimately became the basis for the definitive Springfield Model 1873, the first breech-loading rifle adopted by the United States War Department for ...
In pump action firearms, a sliding grip at the fore-end beneath the barrel is manually operated by the user to eject and chamber cartridges. Pump actions are predominantly found in shotguns. Some examples of firearms using the pump-action are the Winchester Model 1912, Remington 870, and Mossberg 500.
For 5.56×45mm NATO ammunition STANAG 4172, among a considerable number of technical requirements, specifies the permissible primer sensitivity range for 5.56×45mm NATO ammunition. [ 5 ] Spring-loaded firing pins may move further forward than expected during the loading process if the restraining spring is broken or weakened by age.
The Pancor Corporation Jackhammer is a 12-gauge, blow-forward gas-operated bullpup automatic shotgun designed in 1984 and patented in 1987. Only three working prototypes of the Jackhammer were built, but despite notable interest, legal and financial issues meant the Jackhammer never entered production, though it was notably popular as a prop weapon in films, television shows, and video games ...
The Remington Model 10 is a pump-action shotgun designed in 1908 by John Pedersen for Remington Arms. [2] It has an internal striker within the bolt and a tube magazine which loaded and ejected from a port in the bottom of the receiver. [5] An updated version, the Model 29, was introduced in 1930 with improvements made by C.C. Loomis. [3]
Diagram of a Springfield Model 1855 Musket's lock mechanism. The small plate with the eagle on it is the cover for the Maynard tape system. Maynard's new system still required the musket's powder and Minié ball to be loaded conventionally into the barrel, but the tape system meant that the percussion cap no longer needed to be manually loaded onto the percussion lock's nipple.