Chicago customs officers seized more than 1,500 Glock switches to turn guns fully automatic last year

CHICAGO (CBS) -- U.S. Customs and Border Protection announced Tuesday that its officers seized more than 1,500 devices to turn weapons fully automatic throughout last year.

The agency said its officers seized 473 shipments containing 1,507 weapon-modifying devices from Jan. 1 through Dec. 31, 2024.

The agency said it stopped 155 shipments containing 354 Glock switches — which modify semiautomatic weapons to make them fully automatic — between January and June. In July, August and September alone, CBP officers seized 241 shipments containing a total of 948 switches. Customs officials did not provide specific seizure figures for subsequent months.