This is a modified jig for the FGC-9 MKII weldless bolt to use a .5" square steel stock instead of 10mm square steel stock. Please refer to the FGC-9 MKII documentation when using this to make the weldless bolt.
FGC-9 MK1 RIP Edition v1.1
FMGCZ-01 all files
Project 73.2 - FGC-9 MKII V0.001 R1