Sauer 100 Classic With the S 100 Sauer raises the standard for entry-level rifles to a new level. The compelling features of the S 100 - the adjustable single-stage trigger three-position safety hammer-forged original Sauer barrel famously smooth Sauer bolt and Ergo MAX stock geometry taken from the premium Sauer models S 101 and S 404 - make the Sauer 100 set the standard in this price class.