Plug and play, with all electronics except 4s battery and receiver. Sooooo...how does it fly? Beautifully. Plenty fast, and very stable. The retracts and gear doors work perfectly. The bomb drop works perfectly. We will be getting in a stock of spare bombs, too! It had a neat blinking LED landing light that comes on when the gear is down. It has an outrunner motor, 50a ESC, and a super duty BEC to handle all the servos. It slows down nicely, and waggles its wings to warn of a stall if you get too slow. Takes off in 100 feet or so, no problem. Have not tried it off grass yet, but I'm pretty sure it will get off fine if the grass is reasonably short. It's very scale, and a heck of a lot of fun, looks awesome in the air, a ball to fly.