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Because some states require test firing of newly manufactured guns before they can be legally sold (Mass. for one). It's nothing more than a simple proof of function. Regardless of what the "tin-foil hat mafia" wants you to believe. No state pays to have an electron microscope record bullet markings to be put into some secret file archive or database.

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Q: Why is spent shell casing enclosed with new gun?
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Can you trace a shell casing back to the gun?

Sometimes yes, but not always.


Can police trace the shell from a rts zk s-s12 suppressed shotgun?

"They could match extractor marks on the shell, yes." If they don't have the gun and it's registered: Highly unlikely, unless it being registered they also get a spent shell casing with the extractor marks and firing pin indent on the firing cap. Also, if you don't "police" your brass, they have the shell casings at the scene, where there is likely a casing with your finger prints (loading the firearm) and possibly DNA (sweat or blood on the casing). Realistically though, if it's a standard shotgun, smooth bore barrel, and you shoot rifled slugs or buckshot and leave no evidence of the shell casings behind, they would have a hard time matching it to just the projectile part of it.


How does an automatic gun work?

When the gun is fired the shell casing is ejected by the blow-back gas and the next bullet is automatically loaded. All in one motion. The next bullet is now ready to fire.


When firing bulletthe gun must be held to the right shoulder why?

The usual reason for this is because the casing usually ejects to the right. If you held the gun on your left shoulder, it would eject the spent cartridge (possibly) directly into your face or arm. Those spent shells can be rather hot......


What does a typical firework contain?

Gun Powder, a shell casing (usually cardboard, cotton, and other various paper products) and an element, when burned, gives off a specific color.


Is it possible to distingwish the difference between one Glock hand gun of the same caliber and another using only breachblock head space marks on the shell casing?

Yes.


What is a bolt action air soft gun?

All Bolt action rifles work the same. When you fire you have to manually operate the Bolt to eject the shell casing and load the next shot. This must be done for each shot until the rifle is empty. In the case of Air soft there is no Shell casing, but it's the same action to load and fire.


How do shell ejecting airsoft work?

Shell-ejecting airsoft guns tend to eject their shells using a spring loaded system. once the bolt, or slide is drawn back after firing, the spring will force the spent shell out of the gun


Why do the bullet and the capsule drop at the same time when the gun fires?

The bullet and the capsule drop at the same time because they are both affected by gravity once they leave the gun. Gravity acts on all objects with the same acceleration regardless of their mass, causing them to fall at the same rate.


What is the purpose of the ejection port cover on the m4?

To help keep foreign matter (dirt) out of the action when the weapon is not firing.


When did they stop using gun powder?

They didn't. Modern cartridges or "bullets" still contain gunpowder inside the shell casing. The first gun powder integrated cartridge was invented in 1808, but it didn't really catch on until around the time of the American Civil War.


What does a gun extractor do?

The extractor removes the spent shell after the gun has fired. I am sure most people think of the extractor as part of a gun. That may well be true. Keep in mind that the extractor also could be a man. In that case the extractor would be part of a gun crew.