cross bolt, half cock, and transfer bar. the cross bolt does just that, you push a safety button and it pushes a pin into the bolt and locks it there. the half cock is usually used on lever actions and single action revolvers but is on others as well, there are 3 positions on the hammer, full forward, half cock( the position is questionable) and full cock, the half cock just makes it so the hammer is back and locked so it cant be fired, but it can be relieved by pulling the trigger, but it is far enough back so it wont get enough forward momentum to ignite the primer. the transfer bar is used almost exclusively on handguns, usually revolvers, it slides a small mental plate in front of the firing pin so the striker cant hit it.
score a touchdown, or score 2 field goals. Or three safeties!
To prevent a premature or unintended discharge of the firearm. It does NOT replace common sense.
Depends on the type of firearm. Some on the slide, some on the grip, etc.. Additionally, many modern handguns don't have external, manually operated safeties. On some guns, the safety mechanisms are internal.
handgun
No, all guns do not have safeties. There are tens of thousands of different gun models, so it is impossible to say (in a brief answer) which ones do and don't. In GENERAL, most revolvers do not have safeties. Many single shot firearms do not (some do). The Glock auto pistol does not. Many lever action rifles with an external hammer originally did not- now they do. However, the most basic safety is safe handling of a firearm- assume any gun is loaded, do not point a gun at anything you do not intend to shoot, and keep your finger OUT of the trigger guard until you are ready to shoot.
revolver
They DON'T explode when you pull the pin. There are three safeties on a grenade: the safety clip, the pin and the handle. The pin is the second safety you release. When all three safeties have been released, there's a little plunger under the handle that ignites a delaying charge. When the charge burns down to the end of the fuze, it ignites a primer that causes the grenade's filler to explode.
.22 Long Rifle
Safeties.
3
"Safeties" is the plural for safety.
Their weaknesses are their offensive line, their secondary on defense which is the cornerbacks, free safeties, and strong safeties. Their quarterback is also somewhat of a problem as well.