The excellent properties of the new MIT cable-in-conduit conductor has enabled the design of a retrofit-scale superconducting MHD magnet using a "momentless" force containment structure. The paper will describe the magnet design and compare its weight, cost and manufacturing logistics with the prior art pool-cooled designs. The magnet system to be described has a peak on-axis field of 4.5 T, has an aperture of 0.8 x 1.0 m at the inlet end of the magnet and 1.3 x 1.6 m at the outlet end, and stored energy of approximately 490 MJ.