Requires that whoever uses or carries a firearm during the commission of specified Federal crimes of violence, or whoever is convicted by a State court of specified State crimes of violence and used or carried a firearm transported in, or affecting, interstate or foreign commerce during the commission of such crime of violence shall, in addition to the punishment provided for the commission of such crime, be sentenced to a term of imprisonment of not less than five nor more than ten years. Requires in the case of a second or subsequent conviction the imposition of a term of imprisonment of not less than ten years, or to life imprisonment. Stipulates that the execution or imposition of any term of imprisonment under this Act: (1) may not be suspended; (2) may not run concurrently; and (3) may not include probation.