First of all you need to find a good tone for this. Because these tapped harmonics required to use more gain and highs. As an example with my usual tone I can't do this because I use a little amount of gain in sound. But if I add more gain and highs and I use my bridge pickup, then would work.
Also Muris use his MK guitar which has on bridge Stan Hinesley Rogue pickup. From what I know, these are powerful and aggressive. This is a very good advantage
Another thing is that you must hit those harmonics, not on top of the fret, not on the center of the fret, you must hit to the left of the fret. Look very carefully at Muris video and you will see how his finger hit the fret from the left side. Also to make those harmonics to have a clear sound you must have a good precision when you hit but this will come with practice.
Lately I work a lot to achieve this and it's not easy at all. It's funny how simple sounds everything in theory but the way to make it works in practice it's another story
Hope my tips will help you. I'm sure the instructors can tell you more about this. I'm still in learning process and I work for harmonics in my mentoring