MagicDraw is useful for developing architectures, but can it be used for modeling and simulation activities? This paper explores the use of instance specifications to simulate the traversal of a message through an information technology (IT) network. When performance specifications are associated with particular hardware devices, the simulated path can be used to conduct parametric analyses. Thus, adding instance-based logic to MagicDraw models can provide a valuable intermediate fidelity solution before transitioning to a more costly M&S tool.