Ray, WA5F has started another branch of flying wings for the RC Justice League crew. So far, Ray, Joe and Eric are either building or have already flown.
Here's the recommended parts and vendors where you can order everything you need to build one.
Servos: You will need two
Batteries: You will need three or four.
Motor: two choices, #1
Receiver: your choice for your radio brand
Prop: EMP 6 x5 or CAM 5 x 4.3
The Mini Popwings come out of the box ready to fly in about two hours. All you do is mount you motor to the already glued on motor mount, pop two, 6 or 9 gram servos into the pre cut slots, cut the aileron linkages and heat shrink, glue on the winglets with CA, mount your ESC, receiver, install a prop and go fly.