you could use the original FGC9 version but this would need the real AR buffer tube to complete. but saves on print time and materials...
https://www.printables.com/model/192633-unw-fgc9-fgc6-mkii-or-mki-thread-in-ar-buffer-tube
this replica model is fully 3d printed made to look like the real version.
this works with the FGC6, FGC6FA, FGC6S (MKI / MKII)
I would print this solid. in a 0.2 layer hight
LBRY Tags: fgc6; fgc; airsoft; sport; fgc9