I'm learning how to build this thing from YouTube videos and the amazing people on this forum (thank you) So far I have every part for an AR, except the lower receiver. (California makes me wait 10 days to pick up)...and for my first build I bought a complete upper My question is, what tools will I need? ...from watching videos I've seen that I may need... Roll pin punches? But which size? A rubber hammer/maillot? Blue locktight? Castle nut wrench? Vise? Anything else I'm missing?