ATF and customs officials in Chicago identified more than 2,900 packages containing conversion devices "that are believed to have been shipped into the United States" under false customs declarations, according to an affidavit filed in federal court in Rhode Island. The devices render semi-automatic Glock pistols into fully automatic weapons and are considered a machine gun in and of themselves under federal law. While the devices are specifically designed to modify Glock pistols, Engelbert, the ATF spokesman, stressed that they are not manufactured by Glock.
"They're not for hunting," she told CNN. "They're not for home protection." Rather, Snyder said, she worried they may appeal to criminals interested in "drive-bys and mass shootings."
The conversion devices were sold for $19.99 each and advertised as "Glock Pistols Select of switch Full Auto For All models Glock all Generations."
Can’t be much to them selling for $20.