Systems, devices, and methods are described for using an autoinjector device. In one aspect, an autoinjector device comprises a housing and a plunger slidably mounted to the housing, the plunger including a tapered region. An actuator urges the plunger with respect to the housing from a storage position to a launch position, and a friction element about a portion of the tapered region resists a movement of the plunger from the storage position to the launch position.
