Example medical device delivery systems are disclosed. An example delivery system for an implantable medical device includes an outer shaft having a distal end region, a proximal end region and a lumen extending therebetween. The delivery system also includes a handle coupled to the proximal end region of the outer shaft, wherein the handle includes a first actuator, a carriage and a housing. The delivery system also includes a selector coupled to the handle and a resistance member disposed along a portion of the selector. Further, the selector is configured to shift between a first configuration and a deployment configuration. Additionally, the carriage is free from the resistance member in the first configuration and the resistance member contacts the carriage in the deployment configuration.