Questions tagged [firearms]

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Can rifling be etched onto a bullet for spin stabilization when fired from a smoothbore gun?

I understand rifled barrels can impart spin onto a bullet to help spin stabilize it in flight. Is it possible to "rifle" a bullet to impart spin on itself when fired through a smoothbore gun ...
August H's user avatar
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0 answers
111 views

Why do 40mm Grenade launchers have short barrels?

Wouldnt they have more muzzle velocity and range if the barrels were longer? Is it because of increased recoil? If yes, could a longer barrel be used without increasing the recoil and if so how?
Can T's user avatar
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0 answers
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How to make an L7 tank gun eject with more force

I'm looking into tank autoloaders, and something that eludes me is how modern tank guns eject. I know there is a pair of "ears" that push against the case rim, but the precise mechanism ...
Svanto's user avatar
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-2 votes
2 answers
72 views

Is this a rifle or a shotgun? [closed]

According to a Meta Post I found this is the right place to ask this kind of question. I apparently can't find the post anymore but it pointed towards this subsite. Yesterday I had an argument (for ...
Sir Muffington's user avatar
1 vote
1 answer
96 views

Why is the carrier block in a winchester rifle made of brass?

In a Winchester 1873, the carrier block is the part that moves a cartridge from the magazine up to the chamber, and that pushes the previously spent shell up out of the top of the rifle. It moves back ...
Bas's user avatar
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2 votes
0 answers
56 views

Why do recoilless rifle ammunition still have casings?

Recoiless guns have breeches that allow gas to escape out of the back of the gun. Therefore, theres no sealing action to be performed by the casing. Why is ammunition with perforated cases used, when ...
Francis L.'s user avatar
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2 answers
144 views

How does Milkor MGL Granade Launcher's trigger and cylinder mechanism work

I want to know how does Milkor MGL's trigger and cylinder work. In particular, I am interested in how exactly the trigger action switches the cylinder among the cartridge chambers. As far as i know, ...
Nina Vladimirova's user avatar
0 votes
4 answers
6k views

Why are pump action rifles so uncommon compared to bolt-action rifles?

Pump action seems to be a faster way to cycle a weapon compared to bolt action and it's a rather simple action, unlike straight-pull bolt which are more prone to malfunction. It almost seems like a ...
Hawker65's user avatar
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2 answers
163 views

What are the advantages of the slide in semi-automatic pistol design?

A majority of semi-automatic pistols (revolvers excluded) have a spring-loaded component called slide as a part of their firing mechanism. Although historically there are designs without a slide, (...
Mys_721tx's user avatar
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5 votes
2 answers
112 views

Improvements in ammunition design?

In a news article today the reporter claims that modern improvements in "ammunition design" have made long rife barrels unnecessary for assault weapons. Here is the paragraph: The 20-inch barrel ...
Wallace Park's user avatar
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6 votes
2 answers
142 views

Does negative pressure inside the barrel affect low-powered railguns?

Just something I was wondering about when I've seen this on reddit today. Unlike in firearms where the pressure propels the projectile, in a railgun, wouldn't the pressure ahead/behind of the ...
Llamageddon's user avatar
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2 answers
1k views

What is the simplest spring system that could produce recoil absorption comparable to that exhibited by the AA-12 assault shotgun?

In this video, the video emphasises the very low recoil level of the AA-12 fully automatic shotgun. In particular, at this point in the video the presenter uses one hand to relatively lightly grip the ...
Hal's user avatar
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6 votes
2 answers
2k views

Why does AN-94 have higher burst fire than its cyclic rate?

AN-94 is an assault rifle of Russian design chambered in 5.45 caliber. It is claimed to be state-of-art in Russian small arms development. The most important design differences (relative to common ...
eimyr's user avatar
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