The CZ Model 25 (properly, Sa 25 or vz.48b (samopal vzor 48 výsadkový ... submachine gun model year 1948 para)) was perhaps the best known of a series of Czechoslovak designed submachine guns introduced in 1948. There were four generally very similar submachine guns in this series: the Sa 23, Sa 24, Sa 25, and Sa 26. The primary designer was Vaclav Holek (Hogg 1979:157). The design of the Sa 23 series submachine guns is most notable in the west for having heavily inspired the slightly later Uzi submachine gun (Hogg 1979:157).