Customs officers in the Chicago area spent April quietly pulling a small arsenal out of the mail. U.S. Customs and Border Protection (CBP) says its teams intercepted more than 100 incoming packages that were hiding parts meant to turn ordinary guns into fully automatic weapons or to muffle their shots. The haul included over 250 so called “Glock switches” and more than a dozen suppressors, with most of the parcels arriving from China. The seizures were handled by CBP anti-terrorism contraband teams and International Mail Facility officers working inside Chicago-area cargo hubs.
According to CBS Chicago, CBP reported that officers stopped 107 shipments in April that contained either devices to convert semi-automatic pistols into fully automatic fire or hardware meant to suppress gunshot noise. CBP told the outlet that the pieces are restricted by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and that the shipments were coming in from overseas.
Why These Tiny Parts Are Big Federal Trouble
Under federal law, ATF treats conversion gadgets such as “Glock switches” as machineguns in their own right. That means the devices themselves, even before anyone installs them on a firearm, fall under strict bans and criminal penalties, according to ATF press materials. Recent federal prosecutions and sentencings have underscored that possessing, making or selling these conversion parts can result in multi-year prison terms. Press releases from ATF lay out how investigators pursue both sellers and manufacturers.
How The Packages Tried To Slip Through
CBP said many of the intercepted parcels raised suspicions because they were misdeclared, inaccurately described on customs forms or missing the ATF import approvals that would be required for legal entry, according to reporting that reviewed the agency’s statement. As the Washington Examiner noted, Michael Pfeiffer, acting director of field operations for CBP’s Chicago office, warned, “These illicit attempted importation of weapon modification devices pose a danger to our communities.” The outlet also reported that April’s tally stood out as particularly high compared with seizure figures from last year.
What It Signals For Chicago
For Chicago residents, the episode highlights a double threat: cheap parts that can dramatically increase a gun’s lethality, and a steady stream of small, easily overlooked packages that can skirt basic screening. As CBS Chicago relayed, the items were intercepted at cargo and international mail facilities that CBP says it prioritizes for contraband enforcement, and officers stress that staying alert in mail environments is critical if they want to cut these parts off before they make it to street dealers.
What Happens After A Seizure
Federal statutes enforced by ATF treat unlicensed possession or trafficking of machinegun conversion devices as a serious offense, and prior ATF press releases describe guilty pleas and multi-year sentences in comparable cases. Agencies that police international parcels typically send firearm-related seizures to ATF and to federal prosecutors for review, which can lead to outcomes ranging from simple forfeiture and administrative measures to full criminal indictments. Additional examples in releases from ATF show how these cases are charged and how sentences are ultimately handed down.
