For anyone thinking about undertaking the Sig P320 80% I wanted to document the required tools and and steps required to complete the JSD Supply 80% insert. The insert and jig to complete are available directly from JSD as well as F &F Firearms, as well as others I am sure. Tools Needed: -JSD Jig -Deadblow hammer or mallet -Drill Bits: 9mm, 3mm, #9, #22, #39, #40, 7/32″ (these should come with the jig) -Misc files (small flat file and needle file at a minimum) -Dremel with small diamond tip and cutoff wheels -Benchvise -Drill Press Here is how the JSD P320 80%Read More →