This will give your Macap Doserless M4 an angled base. You can use the original rubber feet in the base for anti vibration. Printed at 20% infill with localized 90% infill only on the top pegs and localized area. It is a tight fit and will require some pressing to fit accurately.

I have added a test print with only the plug locations incase your printer or pla plastic has different properties. use localized 90% infill at the pegs to ensure they don't sheer off when you test fit it.