Sounds like these guys were trying to give the ATF a run for their money...
http://www.wbez.org/story/northwest-indiana-cops-indicted-gun-charges-92358
Northwest Indiana cops indicted on gun charges
Three police officers working in the sheriff’s department of Lake County, Ind., are facing indictments for allegedly selling military-grade weapons on the Internet.
The U.S. attorney’s office says a federal grand jury returned firearm and tax violation indictments on Edward Kabella, Joseph Kumstar and Ronald Slusser.
The three allegedly bought 74 fully automatic machine guns and 92 laser aiming devices from a reputable dealer and resold them. Online sales of the guns and parts allegedly netted the officers thousands of dollars.
Federal prosecutors allege that some of the guns and parts were used in crimes in Canada and Mississippi.
“When you sell things like this to anybody on the Internet, you have no idea who’s going to end up with them,” said David Capp, U.S. Attorney for Northern Indiana. Capp made the announcment about the indictments during a Thursday afternoon news conference at the Federal Courthouse in Hammond.
The scheme occurred between September 2008 and January 2010, which would place it during the tenure of former Lake County Sheriff Roy Dominguez, who left office at the end of 2010.
http://www.wbez.org/story/northwest-indiana-cops-indicted-gun-charges-92358