A stent coupler for use with a medical device delivery system is disclosed. A stent delivery system includes a core member having a distal segment and a coupler positioned about the core member distal segment. The coupler is rotatably coupled to the core member and includes a rigid plate having a first end surface, a second end surface, and a side surface extending between the first and second end surfaces, the side surface comprising one or more projections separated by recesses. The delivery system further includes a stent extending along the core member distal segment such that an inner surface of the stent is engaged by the one or more projections of the engagement member.