STI International

In the 1980's the founder of STI, Virgil Tripp, was hand crafting competition 1911 pistols using basically the same components and techniques of other gunsmiths of that era. Because of the need for product improvement, Tripp Research Inc., now renamed STI International, led the firearms industry into the precision world of "EDM" hammers, sears, and other components. Expanding on the success of this highly successful line of precision components, STI then revolutionized the firearms industry with their modular