A federal court jury found Ong guilty of crimes including tax evasion and conspiracy to defraud the governmenty following a nine-day jury trial.
Ong failed to report millions of dollars in income from the sale of firearms and related supplies to government agencies and the public.
According to trial evidence, Ong evaded payment of more than $600,000 in federal income taxes from 2000 to 2006.
U.S. District Judge Leslie Kobayashi will sentence Ong March 1.
Marcus Williams, Special Agent in Charge of the Hawaii IRS office, said that Ong’s crimes were not victimless.
“Every time someone in America cheats on their taxes, there are over 300 million victims,” said Williams.