can some one explain to me how i would play a lick like the fast descending scale run in ride the lightning

do i barre anything, because when i try to switch strings fast...its a nightmare
Usually you finger the Pentatonic scales with only your 1st, 3rd and 4th finger, if you're using more than those 3 then I can see why it would get a little tricky. I could be wrong though, if you are using the 1st 3rd and 4th and you are still having some trouble the only advise I have is just practice small diatonic patterns , like say an Aminor Pentatonic


Idk something along those lines
hope that helps