A “stovepipe” malfunction is caused when a spent casing is not ejected far enough or fast enough to leave the firearm's ejection port. This failure to eject malfunction causes the spent casing to get caught by the handgun slide, preventing the firearm from returning to an operable state. A stovepipe or smokestack typically occurs in pump action, semi-automatic, and fully automatic firearms that fire from a closed bolt, when an empty cartridge case gets caught partway out of the ejection port instead of being thrown clear. Double feeds occur when either the brass or ammo fails to extract and becomes stuck in the chamber, but as to what happens after that there are many different things that can happen. If the bolt grabs two rounds at the same time—what is known as a 'true double feed'—the system will attempt to chamber both. Failures to feed are almost always caused by magazines, feed ramps, and bad recoil springs. Too much tension and it returns too fast; too little tension causes excessive dwell time during the recoil cycle, and the slide doesn't return fast enough to fully chamber the round. Another potential cause is the extractor. As the slide or bolt flies backwards, a small claw (usually called an "extractor) grabs onto the rim of the cartridge and pulls it rearwards out of the chamber. As it reaches a certain point, another small part called an ejector hits one edge of the casing and due to the speed involved, launches it out of the gun.
But, no, in the real world guns do not backfire. If, however, a gun has its bore obstructed, is improperly loaded, or otherwise malfunctions, it can explode, sending hell hot gases and potentially lethal shards of metal back towards the shooter.
This could cause a gun to explode. Using ammunition that is not correct for your firearm can be dangerous. However, some firearms (especially lower end ones) can not handle the extra pressure created during firing. Over time, this could lead to a rupture of the barrel.
Limp wristing is a phenomenon commonly encountered by semi-automatic pistol shooters, where the shooter's grip is not firm enough and the wrist is not held firm/straight enough to keep the frame of the firearm from traveling rearward while the bolt or slide of the pistol cycles.
The danger of a hangfire lies in the fact that it is often mistaken for a misfire. This, in turn, can result in two distinct types of hazards. First, a shooter who assumes that a non-firing round is a misfire may immediately open the gun's action to remove the malfunctioning cartridge.
AR-15 malfunctions may be due to an irregularity in the performance of the rifle itself, the magazine used to deliver ammunition to the rifle or a problem with the ammunition itself. The most common AR-15 malfunctions are: failure to feed, failure to fire, short stroke, failure to eject, and failure to extract.
Despite the seemingly endless variety of rounds available, virtually all of them fall into two types of ammunition: rimfire and centerfire. These two kinds of ammo are named according to how the primer ignition system works. Each round of ammunition, whether rimfire or centerfire, is referred to as a cartridge.
Take a close look next time you have a jam. Glock has changed the way they manufacture their extractors. The jam you're describing is usually attributed to the extractor and/or ammo profile/OAL/rim thickness. If you ride the slide with your hand, and the round hangs up like that - bingo.
Overall, the biggest difference between single action and double action weapons is what the trigger does when you pull it. When you pull the trigger of a single action weapon, it simply drops the hammer. In a double action weapon, pulling the trigger both cocks and drops the hammer.
Failure To Return To Battery It's basically where something stops the gun from completing a cycle of the slide, failing to lock up. A worn-out recoil spring is also a common cause, as there needs to be sufficient tension upon compression of the spring to return it to battery.
There are many ways for a gun to jam: Failure to fire: Where you pull the trigger and get a click instead of a bang. Usually caused by poor ammo, gunk built up near the firing pin (preventing it from moving forward properly) or trigger mechanism, or a weak firing pin spring.
FAILURE TO FIRE (Misfire). This occurs when the trigger is pressed, the sear releases the hammer, the firing pin hits the cartridge, but it does not fire. There is an indentation on the round's primer or rim, but there is no bang. The Misfire occurs because either the round was a dud or there was a hang fire.
It's called the slide stop. It's there for a reason. When you've fired the last round in your pistol's magazine, the magazine's follower pushes up against the slide stop and causes it to catch in a recess in the pistol's slide. This, in turn, causes the slide to be locked back.
The Gun Barrel Most obvious is that the rifling in the barrel spins the bullet. When a bullet is fired, the barrel vibrates. This can cause minute plastic deformations (where the metal stretches) which, over time, compound into large enough deformations to impact accuracy.
The misfeed is the most common form of malfunction with a gun. This happens when the round is not properly chambered and the gun jams. Sometimes this doesn't go as it should and a round of ammunition does not enter the chamber properly, so clearing a misfeed is a skill necessary so you can defend yourself.