A bill to provide for increased mandatory minimum sentences for criminals possessing firearms, and for other purposes.

Revises Federal criminal code provisions regarding using or carrying a firearm, and using or carrying a firearm while in possession of armor piercing ammunition capable of being fired in that firearm, during and in relation to a crime of violence or drug trafficking crime to make penalties under such provisions applicable to possessing a firearm under such circumstances.

Directs the United States Sentencing Commission: (1) to review and, if appropriate, amend the sentencing guidelines and policy statements of the Commission to enhance the sentence of any defendant who discharges a firearm during or in relation to any crime of violence or drug trafficking crime; and (2) in carrying out such provision, to ensure that there is reasonable consistency with other Federal sentencing guidelines, avoid duplicative punishment for substantially the same offense, and take into account any mitigating circumstances that might justify an exception.