You will soon be able to buy Madbull directly from Madbull themselves:
MadBull Airsoft is proud to present a new service: MadBull Direct Sales. MadBull direct sales will provide Madbull product parts information, exclusive offer and give away to fans, and most importantly, an efficient purchase method for Madbullers. This service will be available at www.madbull.com pretty soon!
(Madbull)