Idaho Code § 19-2520
Any person convicted of a violation of sections 18-905 (aggravated assault defined), 18-907 (aggravated battery defined), 18-909 (assault with intent to commit a serious felony defined), 18-911 (battery with intent to commit a serious felony defined), 18-1401 (burglary defined), 18-1508(3), 18-1508(4), 18-1508(5), 18-1508(6) (lewd conduct with minor or child under sixteen), 18-2501 (rescuing prisoners), 18-2505 (escape by one charged with or convicted of a felony), 18-2506 (escape by one charged with or convicted of a misdemeanor), 18-4003 (degrees of murder), 18-4006 (manslaughter), 18-4015 (assault with intent to murder), 18-4501 (kidnapping defined), 18-5001 (mayhem defined), 18-6101 (rape defined), 18-6501 (robbery defined), 37-2732(a) (delivery, manufacture or possession of a controlled substance with intent to deliver) or 37-2732B (trafficking), Idaho Code, who displayed, used, threatened, or attempted to use a firearm or other deadly weapon while committing or attempting to commit the crime, shall be sentenced to an extended term of imprisonment. The extended term of imprisonment authorized in this section shall be computed by increasing the maximum sentence authorized for the crime for which the person was convicted by fifteen (15) years.
For the purposes of this section, "firearm" means any deadly weapon capable of ejecting or propelling one (1) or more projectiles by the action of any explosive or combustible propellant, and includes unloaded firearms and firearms which are inoperable but which can readily be rendered operable.
The additional terms provided in this section shall not be imposed unless the fact of displaying, using, threatening, or attempting to use a firearm or other deadly weapon while committing the crime is separately charged in the information or indictment and admitted by the accused or found to be true by the trier of fact at the trial of the substantive crime.
This section shall apply even in those cases where the use of a firearm is an element of the offense.
Idaho Code § 19-2520