Relating to firearms.

Defines "undetectable firearm." Punishes manufacturing, importing, offering for sale or transferring undetectable firearm by maximum of 10 years' imprisonment, $250,000 fine, or both. Punishes possession of undetectable firearm by maximum of 364 days' imprisonment, $6,250 fine, or both. Defines "untraceable firearm." Punishes possessing, manufacturing, importing, offering for sale or transferring untraceable firearm by maximum of $1,000 fine upon first conviction, 364 days' imprisonment, $6,250 fine, or both, upon second conviction, and 10 years' imprisonment, $250,000 fine, or both, upon third and subsequent convictions. Defines "unfinished frame or receiver." Requires gun dealer to conduct criminal background check before transferring unfinished frame or receiver. Punishes importing, offering for sale or transferring unfinished receiver by maximum of $1,000 fine upon first conviction, 364 days' imprisonment, $6,250 fine, or both, upon second conviction, and 10 years' imprisonment, $250,000 fine, or both, upon third and subsequent convictions. Specifies exceptions. Punishes possession of unserialized unfinished frame or receiver by maximum of $1,000 fine upon first conviction, 364 days' imprisonment, $6,250 fine, or both, upon second conviction, and five years' imprisonment, $125,000 fine, or both, upon third and subsequent convictions. Provides that person commits crime if person possesses unfinished frame or receiver and is prohibited from possessing firearms. Punishes by maximum of 364 days' imprisonment, $6,250 fine, or both.