In 1967, David McKay Brown set up his own business, initially repairing guns. He was very impressed with the merits of the round action and in 1974 built the first McKay Brown trigger plate round action. In the 1980s he designed a round action over and under gun, the first such gun being completed in 1992, much admired for its design and elegance.Since 1974 he has built 578 round action guns and rifles both in side-by-side and O/U configuration.The history and development of the round action and the new O/U gun are described in detail for the first time. There are several chapters on the building of McKay Brown guns that go into great detail about their construction.