Carson City, Nevada IHOP shooter fired about 60 rounds from fully automatic rifle.

The mentally ill man who opened fire at a Carson City IHOP restaurant, killing four and then himself, shot 60 rounds from a Norinco Mak 90 assault weapon that had been purchased by a private party in California more than five years ago, officials said today.

The Mak 90, a Chinese-made modified version of the Russian-made AK-47, had been altered to function as an automatic weapon, said Carson City Sheriff Ken Furlong in a statement released early today. The details on the weapon followed a monthlong investigation by the Bureau of Alcohol, Tobacco, Firearms and Explosives.

“The alteration was described by ATF as professionally gunsmithed by an unknown person,” Furlong said in the statement. “The possession of this weapon in its manufactured state (semi-automatic) is not prohibited by Nevada State Law.”

Source: Martha Bellisle for RGJ.com.