Disclosed are wellbore flow control devices that allow on-site field adjustments to flow characteristics. One autonomous inflow control device (AICD) assembly includes a housing arranged about a base pipe that defines at least one flow port and an interior, the housing defining a fluid compartment in fluid communication with the at least one flow port, an AICD arranged in the fluid compartment and having at least one fluid inlet and an outlet in fluid communication with the at least one flow port, a shroud coupled to the housing and covering the fluid compartment, and a crimping tool arrangeable about the housing and the shroud and having a profile defined thereon, the profile being configured to engage and plastically deform the shroud in order to fluidly isolate the AICD.