§ 160.15 Robbery in the first degree.

A person is guilty of robbery in the first degree when he forcibly
steals property and when, in the course of the commission of the crime
or of immediate flight therefrom, he or another participant in the
crime:

1. Causes serious physical injury to any person who is not a
participant in the crime; or

2. Is armed with a deadly weapon; or

3. Uses or threatens the immediate use of a dangerous instrument; or

4. Displays what appears to be a pistol, revolver, rifle, shotgun,
machine gun or other firearm; except that in any prosecution under this
subdivision, it is an affirmative defense that such pistol, revolver,
rifle, shotgun, machine gun or other firearm was not a loaded weapon
from which a shot, readily capable of producing death or other serious
physical injury, could be discharged. Nothing contained in this
subdivision shall constitute a defense to a prosecution for, or preclude
a conviction of, robbery in the second degree, robbery in the third
degree or any other crime.

Robbery in the first degree is a class B felony.