An affordable clone of the Tokyo Marui SGR-12 AES is made by CYMA called the CM.102 and Taiwan Gun are expecting this to be available in December 2021... "CM.102 is an electric replica of a fully automatic shotgun. The mechanism is a dedicated gearbox with 3 barrels, which allows you to fire 3 BBs at a time. Each barrel has a separately adjustable hop-up system, which improves the range and accuracy of the shotgun.