The No. 1 Mk III is a bolt-action rifle that was widely used by the British military during the early 20th century, particularly in World War I and World War II. It was designed to fire the .303 British cartridge and is known for its accuracy and reliability. The rifle features a five-round magazine and a distinctive curved bolt handle. This rifle was an evolution of earlier models, incorporating improvements in design and functionality. The No. 1 Mk III was eventually replaced by more modern firearms, but it remains a significant piece of military history and is still popular among collectors and shooting enthusiasts today.