Ch. Gun Brother: Sharpshooter does a video showing how to put together the AEGIS FMG-9 for airsoft use. This is based on the Magpul FMG-9 or the folding machine gun and is the only one in production in airsoft given that PTS Syndicate have already ended production of its FPG... "This is the assembly video of Aegis Custom FMG9. This product was assembled using WE Glock 18C."