Guys,
I didn't use anything I didn't already own. I am one of those tool poor guys. Punches, small hammer, needle nose, duct tape, screw driver, and block of wood. My 11 year old was my vise.
I used the old ar15.com directions only which was extremely helpful. I left the parts in the bag since with the printed directions wre great especially the written descriptions and they were easy to identify. Two things I kept foremost in my mind before each step, shooting springs and accidental scratches. Even with that, I only used the duct tape on bolt release roll pin. One of the guys recommended flexing the roll pins with the needle nose, which I feel was a big help. I also took special care not to drive anything that wasn't supported from the other side with the wood block. Didn't want broken forge parts on the lower.
The front retainer indent pin is not all that well explained in the directions. Method I used was to place the spring in the hole, then hold the indent with the needle nose, push the pin down into the hole a little to get it started, they used the retainer pin to push down the rest of the way, insert the retainer a little, then turn till the indent clicked into the groove. The whole time my son held a towell in front of the receiver in case I launched the pin and spring. No problem.
Lower I bought was a forged DPMS manufacture. Actually was Mil Spec M16 for it had stops both behind the safety and in front. Needless to say, an AR safety will never touch the front stop since it only has two positions, fire & safe.
I posted a pic of the finished project.