1
Lonnie Burrow: Method of making a two-piece primer insert. True Velocity, Chainey P Singleton, January 16, 2018: US09869536 (9 worldwide citation)

The present invention provides a method of making a two piece primer insert comprising: an upper primer insert portion comprising an upper primer bottom surface, an upper primer aperture through the upper primer bottom surface; a substantially cylindrical coupling element extending away from the upp ...


2
METHOD OF MAKING A TWO-PIECE PRIMER INSERT. September 14, 2017: US20170261296-A1

The present invention provides a method of making a two piece primer insert comprising: an upper primer insert portion comprising an upper primer bottom surface, an upper primer aperture through the upper primer bottom surface; a substantially cylindrical coupling element extending away from the upp ...