That looked like a great deal!
Not quite complete, and not without some beginner dings, but I'm quite happy with it.
Punches, pliers, Allen keys
You will need a wrench for the Castle nut, and ideally a torque wrench for the barrel nut (with a 1-1/4" crow's foot head)
I've yet to tighten the barrel, which will use a vise block to hold it in place
I did mushroom the forward assist roll pin using a roll pin punch, because it wasn't far enough in yet I assume. The Slip Joint plier method does seem like it would do less damage...as long as you cover the teeth properly (TIP: not masking tape)
I'll be replacing it with that method.
For the forward takedown detent, I'll be picking up a 1/4 Clevis pin
https://www.youtube.com/watch?v=XJNaTjvQaVQ
I may have morter'd my first spring somewhere...
Youtube tutorials make it easy to follow along.