none that i know of
No.
Felons are prohibited by Federal law from owning any firearm.
yes
If it uses gunpowder to launch a projectile it is considered a firearm
No it is not a toy. In some countries it is considered a firearm. In the USA it falls into a grey area. Not quite a firearm but not a toy.
Yes. An air rifle is not considered a firearm, thus a felons possession is not limited.
Yes, an air rifle is not considered a firearm by Texas or federal laws.
You will have to contact the California Department of Justice for a current, legal and correct answer.
A shotgun is a firearm. A revolver is a firearm. A pistol is a firearm. A rifle is a firearm. If you want even more specific -- A Remington 1187 is a firearm (shotgun). A Smith and Wesson 686 is a firearm (revolver). A Sig Sauer P226 is a firearm (pistol). A Colt 6920 is a firearm (rifle).
Yes
A firearm
A rifle