Yes, ML7 type vertical slide in use daily on my M-type. Bolts straight on. Get the little vice to go with it.
I would advise buying the non-swivelling type if you can. I am pretty unimpressed with the lack of rigidity and the tendency to move under heavy milling loads of my ML7-type double swivel vertical slide. You almost never will need to use the swivelling facility, and if you do, the fixed type slide can be pivoted about one mounting bolt and a base clamp used as on faceplates etc if needed.
I'm currently making a reinforcing piece, well getting ready to, for my swiveling slide, will share details when it's done.