Check to see if your local drone dealer can get all the parts for the Enterprise versions with carbon arms. I havent found one that could. The carbon arm is thin around the motor and a slow 3 ft drop sliding off the hood and striking will fracture it. And the repair cost is 463.00 for one arm and motor swap and has to ship to autel in Washington state. I know I just paid for one on the enterprise v2 640T. My dealer waived his handling fee to help when he found out he couldnt get the part, and I still paid 398.00 Rugged model arm repair if it cracks being thicker is more like 250.00 local and easy part access.