Go for it from scratch
, im on my build # 2 from one peace to the next its as much fun for me to build them as to shoot'm well almost
there like lay's potato chip's ya can't have just one.
the only thing i would suggest is get a clear focus on the kind of gun you want in the end , tactical, target, ultra lite , so's your not buying stuff twice.
ya will need a few ar tools though for me this is about all i needed,
mag well vise block http://www.amazon.com/Ultimate-Arms-Gear-Block-Combo/dp/B007VSZCPC
upper clamp block or spline tool https://www.botach.com/kley-zion-ar15-m4-barrel-spline-socket-rod/
Barrel Wrench http://www.amazon.com/NcStar-Armorers-Wrench-powder-coated/dp/B00238XECI
torque Wrench http://www.harborfreight.com/3-8-eighth-inch-drive-click-type-torque-wrench-807.html
roll pin punch set http://www.wcarmory.com/wheeler-204513-roll-pin-punch-kit.htm
it's easy to build one and lots a fuuuuunnnnn
Oh ya and you tube
Good luck with it man
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