What are you guys talking about? It was issued to August Auf der Maur of the second company of the fortress detachment 18. Schwyz probably indicates his hometown and 14 stands probably for 1914 as his year of birth.
Fortress detachment II/18 was based in Näfels, which is not far from Schwyz, manning the artillery fortification "Barbara" there. Go from here to find additional information. If you need any pointers or help with translation let me know.
Almost all rifles are so called "personal weapons", the other option would be "Korpswaffen" (collective weapons), meaning equipment that would be issued to soldiers as needed, for example light and heavy machine guns, smg's, sniper rifles and so on. Officers get a rifle from the Korpswaffen issued as well if they want to, because their personal weapon would be a pistol. It's still the case to this day. The day you finish officers school you get to keep the at basic training issued rifle for the duration of your service, but your pistol is now your personal weapon that you may keep at the end of your service. The rifle has to be turned in (or kept on loan for targetshooting purpose). Glad I never did officers school.