Authorities have not revealed the specific type of gun or guns used by the shooter, although they believe he purchased them legally.
Some facts about gun laws in the Silver State:
The right to bear arms is enshrined in the first article of Nevada's constitution: "Every citizen has the right to keep and bear arms for security and defense, for lawful hunting and recreational use and for other lawful purposes."
Nevada voters passed a ballot measure last year requiring a background check for firearm transactions between private parties. But the state attorney general put it on hold, saying it wasn't enforceable.
The Law Center to Prevent Gun Violence, a gun-control advocacy group that tracks firearms legislation, gives Nevada a grade of C- on its gun laws -- lower than more restrictive states such as California or Massachusetts but higher than 25 states that scored an F.
According to a Pew survey conducted in March and April, 83% of American adults said they consider gun violence in the US a big problem. But far fewer, 47%, say there would be fewer mass shootings in the US if it were harder for people to legally obtain guns.
Support for stricter gun laws often spikes temporarily following mass shootings.