The Airsoft Base got a malfunctioning Tokyo Marui so decided to take it apart and repair it... "Tokyo Marui's MAC-11 Blowback has stopped working (^^; It doesn't work at all, but when I insert the battery and pull the trigger, the motor makes a sound of spinning, but it does not blow back and does not fire. Since it is a good idea, I decided to disassemble it and tried to repair it. * If it is disassembled or processed, it may not be possible to receive manufacturer support. This time, I am disassembling it at my own discretion. If you suspect that the product is out of order, we recommend that you first contact the shop or manufacturer from which you purchased the product."