Developed by Intratec, an American subsidiary of the Swedish firearms manufacturer Interdynamics AB in Miami, FL. Introduced in 1984, the TEC-9 is known for its distinctive appearance. Manufactured from a mix of molded polymer, milled steel and stamped steel. Blow-back operated with a closed bolt design, this model features a 5" barrel with threading for a barrel/muzzle device and a ported barrel shroud. Included with the firearm is 1-32 round magazine. Following the 1989 Cleveland School massacre, the TEC-9 was placed on California's list of banned weapons. To circumvent this, Intratec rebranded a variant of the TEC-9 as TEC-DC9 from 1990 to 1994 (with DC standing for "Designed for California"). The most noticeable external difference between the TEC-9 and the later TEC-DC9 is that rings to hold the sling were moved from the side of the gun with the cocking handle to a removable stamped metal clip in the back of the gun. The TEC-9 was produced from 1985 until 1994, when the model and TEC-DC9 variants were banned nationally in the United States, among the 19 firearms banned by name in the now-expired 1994 Federal Assault Weapons Ban.