Mar 08, 2009 · The laps, gage pins and lapping compound can be purchased from J&L Industrial/ MSC, they are a catalog item, can be purchased separately or in a set. I started with one lap and 4 gage pins to do a 6mm neck die that I purchased for $2 at a gun show, from there I now have 4 different laps and a fist full of pins to cover everything I own.