| Term | Translation | Definition |
| Schaft | stock | ... |
| Schaftbecke | cheekpiece | ... |
| Schaftkappehaken | butt plate hook | ... |
| Schaftrucken | comb | ... |
| Scheibenbüchse | target rifle, match rifle | ... |
| Schlagbolzen | striker | ... |
| Schlagfeder | mainspring | ... |
| Schlagstift | firing pin | ... |
| Schneide | edge | ... |
| Schrot, Hartschrot | shot, pellet | ... |
| Schrotdrilling | three barrel shotgun | ... |
| Schrotlauf | shotgun barrel, smooth bore barrel | ... |
| Schrotpatrone | shotshell, shotgun shell, shotgun cartridge, shot cartridge | ... |
| Schrotschusswaffen | shotguns | ... |
| Schussebene | plane of fire, departure plane | ... |
| Schusslinie | line of fire, line of departure | ... |
| Schussweite | efficient range, range of gun | ... |
| Schussweite, Schussentfernung | range of fire | ... |
| Seitenplette | side plate, lock plate | ... |
| Selbstladeflinte | self-loading shotgun | ... |
| Selbstladepistole | selfloading pistol, autoloading pistol, automatic pistol, autopistol | ... |
| Sicherung | safety, safety catch | ... |
| Spannhebel | cocking lever, bolt lever | ... |
| Sperrbolzen | retainer | ... |
| Sperrbolzenfedei | retainer spring | ... |
| Stabilisator | stabilizer | ... |
| Sternfaltung | fold crimp, rose crimp | ... |
| Stössel | hammer strut, mainspring strut | ... |
| Syphon-Kapsel | pressure bottle | ... |
