HX-1 (episode) - with a shortened barrel to mimic an MP5 sub-machine gun. Used by Joe Ganns for practice at a shooting range.
Fortune Teller (episode) - widely used in this episode. The F.I.R.M. security men at Roberts' lab are armed with it. Stoner's men use it during their raid on the lab to kidnap Roberts. The F.I.R.M.'s Zebra squad uses it during their assault on Scotty's Keep.
Jennie (episode) - with a shortened barrel to mimic an MP5 sub-machine gun and fitted with a suppressor. Used by El Gato during the raid to rescue Jason Keith.