 After some time, Virgil began designing parts for 1911s, including electrical discharge machining (EDM) hammers and sears.Virgil's company was called Tripp Research, Inc. and most of his parts were sold and marketed by Chip McCormick, a champion pistol shooter, under his company's name, Chip McCormick Corporation (known as CMC).Around 1993, an engineer and computer aided design (CAD) expert named Sandy Strayer joined Tripp Research, Inc. Tripp and Strayer revolutionized the 1911 market by designing a modular high-capacity 1911 frame for International Practical Shooting Confederation shooters.