PrototypAlive

I’ve recently purchased a G&G SMC-9 this week. However within just a couple bbs of firing I’m having issues whereby the slide is getting jammed with a bb outside of the barrel. This is doing it both in semi and full, several times in a single mag. If I pull the slide back and shake the bb lose it’ll fire until the next jam. Has anyone else had this experience and found a fix? Or is it a known fault or faulty gun? Cheers in advance! IMG_8372.MOV