A system includes: a body including an internal cavity and an internal reservoir； a holder configured to hold an ampule and configured to be slidably received in the cavity； and a clip configured to connect to the holder, wherein the holder is configured to slide into the cavity to a first position when the clip is operatively connected to the holder, and wherein the holder is configured to slide into the cavity to a second position when the clip is not connected to the holder. A method includes manufacturing the system. Another method includes administering an injection using the system.
