Federal officials say they’ve seized more than 52,000 firearm parts that arrived illegally from China at the Los Angeles and Long Beach port.



The parts — sights, stocks, muzzles, buffer kits and grips — arrived in three shipments and had a combined value of more than $378,000, US Customs and Border Protection said Thursday in a news release.



The parts arrived over a period of three months and were bound for a legitimate US-based gun parts seller and distributor, agency spokesman Jaime Ruiz told CNN.



The United States restricts imports from countries with which it has an arms embargo, including China. The US imposed an arms embargo after the deadly 1989 crackdown on pro-democracy protesters in Tiananmen Square.