504 gr AUW with xiaomi ^^
i did it as light as possible it must be carbon fiber for more durability but plywood+CA+plywood laminate cheap and working for me
After i crash i just put new arms on it everytime 
I hope i can cut soon arms from 3mm and others for 2mm CF

   
   

Flight Controller FC: CC3D atom
Motor: DYS 1806 2300 KV
Propeller: DAL 4045 BN
ESC: SN 20A ESC
PDB: Surveil PDB
Radio Receiver RX: d4r
Video Transmitter VTX: taranis
OSD： NONE
LiPo: Nanotech 4s 1000 mah 45C lipo
HD Camera:/Xiaomi Yi
here is an example flight video not my best flight but ok for that  ^^