For me, I use vice grip pliers, scotch and electrical tape, a hammer, a cheapo set of punches I got from harbor freight (not needed but makes it easier), a screw driver (or whatever bit you need for the grip screw), a castle nut wrench (I use the DPMS milti tool as it has everything I need on it), and a box cutter. In the future I plan to order the special tool from Bravo Company designed to put the detent in the front take down pin. Its $5 and seems to be well worth it to avoid losing that detent.
I have done 2 and helped on a couple more and still like to follow the video on youtube. It makes sure I don't do stupid things. I found it more helpful than the write up on here honestly.