a Blank can hurt or even kill if a person is standing very close to the barrel of the weapon as the resulting flash of powder can burn terribly
No such thing as blank ammunition for a cap gun.
Toy water guns with water in them only hurt if they hit you in the eye.
it depends on their velocity. all three of them can have guns that hurt.
If you hold it close enough, you can get burned by the explosion of gunpowder.
No, they fire blanks. Real bullets would be dangerous.
No such thing as a blank gun. You can put blanks in a gun though.
Yes, but they will fire as a single shot. Unless the pistol is modified, it will not cycle when fired. These guns are recoil operated- and blanks do not produce significant recoil.
no
No, anymore than guns firing blanks can win target matches.
Not at all compared to actual paintball guns.
No. The militiary trains at the highest level with live rounds, them simunition then blanks, then empty guns, then paintball occasionally. Some police units may use airsoft.
Single-shot firearms and manual repeaters such as revolvers, lever guns and bolt actions can fire blanks same as they would live ammunition. Just load and fire as normal. Automatic (both semi and full) firearms can fire blanks, but will not cycle the action without a special device to restrict the flow of gas or increase recoil. Military guns generally have blank fire adapters designed for them to be used for training purposes. They often screw into or in place of the flash suppressor. Some pistols also have such adapters which can attach to the barrel or just replace the barrel with a special blank firing barrel. Most civilian guns do not have such adapters available and may have to be altered to fire blanks with the action cycling properly. This is what is often done with prop guns used in movies.