What are the types of guns and their work
- Gun Safety
- Oct 3, 2020
- 5 min read
A primer for our politically charged time: What guns are, how they work, and also how to use them safely.
Guns are a part of American life and have been since the very beginning, by the matchlock muskets arming the oldest colonies to the Colt revolvers and Winchester rifles of the Old West to the Glock handgun of now. However, as guns have become less frequent, gun darkening has diminished. We take more. We know less. This becomes evident amidst our current politically charged debate about firearms and how to counter gun violence.
In Popular Mechanics fashion, let's talk about the gun for a tool. I have built several of my rifles, like tinkering and shooting with other types of firearms, and have managed almost every major gun-type built in the previous 500 years. Here is what you want to know about how guns work, exactly what the various kinds are, and how to know the jargon around firearms.
How Guns Work
Put simply: If you've got a tube along with a projectile, and the projectile is designed to fly from the tube because of the result of an explosion, you have a firearm. This is a wide definition that covers everything from potato guns to fully automatic machine guns, but it has the fundamental notion of what a gun is.
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In the most elementary sense, firearms work similarly to this: A bullet is loaded to the rear of the barrel, and it is a tube on the firing pin. What occurs automatically when you pull on the trigger is that the firing pin is released. It flies forward, hitting a small explosive charge located at the bottom of the bullet. That burst ignites the gunpowder, which can be tucked within the casing enclosing the bullet. The pressure change forces the bullet from the casing and down the barrel toward the goal.

Admittedly, the rapid evolution of guns makes it difficult to check at them and watch their fundamental components--a trigger, firing pin, and tubes. Now's firearms have magazines capable of holding around 30 or more bullets, or more than one barrel, or can fire more than 1 bullet per pull of the trigger. Some firearms have lights, lasers, rifle scopes, bipods, and other accessories to spot a target or aid in marksmanship. Many firearms are very straightforward, but some guns are extremely complex.
Calibers & Bullet Types
You will hear"caliber" tossed about in any discussion of firearms, on the news or otherwise. The term is merely a way to identify the type of cartridge that the weapons flames.
Bullet calibers are recognized two manners: by fractions of an inch or in millimeters. The .22 round, .38 Particular, and .500 Action Express rounds are all named for their dimensions as a fraction of an inch. The 5.56-millimeter round used within an AR-15 (also expressed, in inches, as .223) is 5.56 millimeters in diameter. The nine-millimeter around is nine millimeters in diameter. And so on.
Nevertheless, a bullet's diameter doesn't mean it'll fit in every gun of the dimension, and there are many sub-varieties of ammunition. A .357 Magnum revolver bullet will not match in a Glock pistol chambered at .357 SIG. The .22 Short round is primarily meant for pistols, while the .22 Long round is meant for rifles. This is starting to sound complex, but everything you need to know is that, generally, a single gun may only shoot one sort of bullet.
Different types of bullet calibers are supposed to accomplish different tasks, and there are literally hundreds of bullet calibers. Some are for smaller shooters more sensitive to recoilothers are for long-range shooting, while still others are for close-range self-defense. By way of example, a .22 Long round is meant for small game hunting and light target exercise. A .223 round, only a tiny bit wider in diameter than .22 Long has a longer range, travels at a greater speed, and is significantly more deadly due to the shape of the bullet and the use of more gunpowder.
Bullets have various shapes or other attributes to take on different tasks. Hollowpoint bullets have a pit in the nose of the bullet which allows the lead to disperse outward on effect, morphing the aerodynamic bullet into a deadly, higher speed metallic blossom, creating gaping wounds. Tracer bullets are designed to allow the shooter to determine where his or her bullets are striking at nighttime, and armor-piercing bullets can penetrate body armor and light steel armor. Both are generally restricted to military usage. "Snake rounds", pistol rounds that fire a spread of metal pellets are useful for killing--you guessed it--dangerous snakes in a distance.
Types of Guns
There are many sorts of guns in circulation today, but they may be divided into two groups: long firearms, including rifles and shotguns, and handguns, including revolvers and pistols. As a general rule, long firearms fire large-caliber rounds from long barrels and are meant to be fired from the shoulder. Handguns are smaller-caliber weapons using shorter barrels and are supposed to be fired using both hands.

Bolt action rifles: The simplest form of firearm nowadays, a bolt action rifle is fired by manually pushing forwards a bolt, then pulling the trigger, pulling back the bolt to release the empty cartridge, and pushing the bolt forward again to load a fresh cartridge. Due to their manual character, bolt action guns are accurate but slow to a flame. Bolt action rifles hold between four and ten bullets within an internal or removable magazine. Examples of a bolt action rifle comprise the Remington 700 and Howa 1500.
Lever action rifles: All these rifles back to the 19th century and are frequently seen in Western films. A pull of a lever connected to the rifle loads a new bullet, the user pulls the trigger, and the other pull of the lever ejects the empty cartridge and heaps a fresh one. The place of the lever makes it a lot faster to fire than a bolt action rifle.
Semi-automatic rifles: All these weapons can vary considerably, but the common feature is that each and every pull of the trigger releases one thing, and loading a new round is automatic. These guns are sometimes called"automatic" weapons, but in this case, that expression refers to the loading, not just the firing. The automatic loading process usually involves recycling a number of the gun's gunpowder gases or momentum and using it to eject the empty cartridge and then load a fresh one. Many semi-automatic rifles have external actors holding five to thirty rounds, which may be changed fast to reload the weapon. Cases of semi-automatics include the AR-15 and Browning BAR rifles. (Notice the difference in the look of both.)
Shotguns: Shotguns are large-barrel long guns that fire a large amount of little steel or lead pellets ("shot") with every pull of the trigger as opposed to a single bullet. The shooter flies from the barrel in a narrow cone-shaped design. This dispersal aids the shooter in hitting little game animals, particularly those in flight, such as ducks. The size of the shooter fluctuates, with smaller birdshot less likely to kill or incapacitate a human, while bigger buckshot is more useful for home defense. Shotguns can be single-shot weapons, pump-action weapons where a single pump chambers a round, and semi-automatic. Examples of shotguns comprise the Mossberg 500 and Remington 870 on the best gun reviews.
Revolvers: Frequently seen in the hands of cinematic cowboys, revolvers were the first multi-shot handguns, keeping around seven bullets at a revolving cylinder which partners with the rifle barrel and firing mechanism (like the firing pin). In modern revolvers, one pull of the trigger improvements the cylinder to a new cartridge pulls the hammer back, and releases the hammer to hit the primer together with the firing pin, firing the handgun. Modern revolvers are considered semi-automatic firearms.
Pistols: Pistols are all handguns that don't use revolving cylinders. Although some single-shot pistols exist, many pistols nowadays are semi-automatic handguns that load cartridges out of a detachable magazine found in the grip. Unlike revolvers that are typically confined to up to seven or six rounds, modern pistols can carry up to 17 rounds in a magazine. Examples include the Glock 17 and the Army's new M17 Modular Handgun System, also Called the Sig P320.
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