Get yourself a multi wrench like the DPMS or Stoner wrench at Midway USA, an action block (I use the DPMS Claw), a nice punch set, maybe a roll pin holder set (all from Brownells) and you are just about set. Midway also sells a front takedown detent pin installer (about $4.00) that I have but have not used yet but I am sure it will save plenty of headaches.