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 ( AWB ) . This ban forced Intratec to cease their manufacture , and forced them to introduce a newer model . The following year Intratec introduced the '' ' AB-10 ' '' ( " AB " standing for " '' ' A '' ' fter '' ' B '' ' an " ) , a TEC-9 Mini without a threaded muzzle/barrel shroud and sold with a smaller 10-round magazine instead of 20 - or 32-round magazines . However , the AB-10 still accepted the larger capacity magazines of the pre-ban TEC-9 models , and were often acquired by users in place of the standard magazine . In 1999 , the TEC-DC9 was notoriously used by Dylan Klebold , one of the perpetrators of the Columbine High School massacre
Columbine High School massacre
Columbine High School massacre
TEC-9