The piston in the tube can be pulled up using a power lever that compresses a relatively strong spring. The ammo is a 2mm bearing ball, which is held by one magnet in the tube. The material of pen gun ...

A man walks past an electronic screen displaying stock quotation board in Tokyo, Japan April 15, 2025. REUTERS/Issei Kato/File photo Asian equities and U.S. stock futures slid on Monday as anxiety ...