Analysis of information sources in references of the Wikipedia article "Gun Fight" in English language version.
Most of these games do not actually use the MB14241 shifter IC, but instead implement equivalent functionality using a bunch of standard 74XX IC's.
... data shifter, using either ~11 74xx chips, AM25S10s, Fujitsu MB14221 or Fujitsu MB14241 chips, which all do the same thing.