The present disclosure provides systems, assemblies and methods for surgery (e.g., robotic surgery). More particularly, the present disclosure provides systems and methods for releasably securing or attaching an assembly for use in a surgical procedure with respect to a user-operable surgical device. In general, the present disclosure provides systems and methods for releasably securing or attaching an assembly with respect to and for use with a user-operable surgery system. Systems and methods for releasably securing or attaching an assembly (e.g., imaging assembly) having a receiver member with respect to a user-operable grasper member of a surgery system are provided.