My gun is having a lot of problems firing. Earlier it would fire inconsistently, sometimes working sometimes it wouldn't (changing to full auto would not work.) It then stopped working all together, randomly firing sometimes when the trigger is pulled but the majority of the time it didn't shoot at all.
I can hear a "whirring" in the motor when trying to fire.
I managed to make it fire by using an Alan key as leverage in between some parts that I have no idea what they are called.
You can see the gun firing when leveraged with the alan key at 1:16 in the video.
https://youtu.be/mziHqfLDexU