For anyone contemplating building a nice ‘lite’ AR, seems like some work was done for us all by a group of folks who are thinking just like us. This spreadsheet has pretty much every part listed from lightest on...then just plug that part into google and if your budget can cover it....this may be my next project if I ever finish my retro build.
https://docs.google.com/spreadsheets/d/1I6Qb6kAJjChEJ56qhznv2291c5UHRDyNXuSXGObumqM/htmlview#
https://docs.google.com/spreadsheets/d/1I6Qb6kAJjChEJ56qhznv2291c5UHRDyNXuSXGObumqM/htmlview#