McMillan celebrates its 40th anniversary this year. Gale McMillan, founder of the McMillan companies, began producing fiberglass stocks on his kitchen table in 1973. Gale was also a great barrel-maker and a top competitive benchrest shooter. Today McMillan has become one of the most respected brands in the firearms industry. While the company has expanded its product line and is known throughout the world, the core of the McMillan’s business philosophy — quality products, exceptional customer service and a commitment to the growth of the firearms industry — remains the same. View 40-Year Timeline.