The indicator light is solid green, but when revving up the gun no longer sounds like it first did and either does not fire or the bullets do not ingest properly

There is an LED light above the dart feed port that shines solid yellow when it senses that your mag or drum is empty, solid green when it senses that a dart is ready to be fired, solid red when the jam access door is open, and blinks yellow when it senses that the magazine is at maximum capacity (and is unable to cram any more darts into it).