No.  This is not via John Lott.  From NSSF via their June 5th news release--Gun Sales Rise as Crime and Accident Rates Fall:

NEWTOWN, Conn.--New statistics show that firearm and ammunition sales are on the rise, coinciding with steady downward trends in gun crime, suicide and accident rates, in the U.S.

...

According to figures from government and independent sources, firearm crimes, suicides and accidental fatalities, including accidents among youth, are all trending downward.

"Reductions in gun crimes and accidental fatalities have been documented for many years, even as gun sales and ownership in our country continue to rise," said Doug Painter, president of NSSF. "However, today’s anti-gun organizations rake in lots of cash by perpetuating the myth that more guns equals more bad news. Clearly, there is no relationship between gun ownership and firearm misuse."