A bolt is a device that is used to lock a firearm chamber. The primary function of a bolt is to keep the cartridge in place while the firearm is being discharged. There are two main types of bolts: breech bolts and action bolts.
Breech bolts are used in revolvers and some pistols. They act as a seal between the chamber and the barrel. This type of bolt usually has a spring-loaded extractor that grabs the cartridge and pulls it out of the chamber after the shot has been fired. If you want to buy bolt gun parts, visit Mountain Tactical.
Action bolts are used in most rifles and shotguns. They have a series of lugs that fit into corresponding grooves in the receiver. When the bolt is turned, it cocks the hammer and then pushes the cartridge into the chamber.
The extractor on this type of bolt typically grabs onto the rim of the cartridge case to pull it out of the chamber after the shot has been fired. Most bolt-action rifles and some shotguns use this type of bolt.
Action bolts are also used in some semi-automatic and fully automatic firearms, although they may have a different design than their non-semi counterparts. In semi-automatic firearms, the action bolt's main purpose is to hold the breech closed so that the cartridge can be set in place, but it also removes the spent casing from the chamber after firing.
Springs provide power to action bolts. They store energy when they are compressed, which is then released when needed to move a bolt. Springs are located inside the body of semi-automatic firearms, while they are outside of it in bolt-action rifles and other types of guns.