The decision takes effect this week, after a unanimous vote last Thursday from the Nevada Sheriffs’ and Chiefs’ association.
Association officials say Las Vegas firearm instructors first notified them about the changes in the training requirements.
Nevada Department of Public Safety officials say they contacted the Arizona Department of Public Safety and confirmed changes were made in 2010 and 2011.
Those include adjustments to the minimum training requirements, and the elimination of statutory marksmanship and judgmental shooting requirements.
Association officials say the requirements are now too different from Nevada’s for the state to recognize the permits.
Arizona public safety officials didn’t immediately respond to a request for comment.