This addon uses the lockdownBeam tag added by Vertex to let you use the Lockdown Module with Modular Beams.
Requires "Vertex Tags and Utility Functions" (made by Chrono Vortex). Make sure to patch it above this addon!
Potential Incompatibilities
Any addon that deletes all of the Modular Beam options and readds them as a way of reordering the new options it adds must be patched before this mod. I don't think there's any addon that does this, but there may be in the future.