World Records Authority is proud to officially announce that James A. DeCaine of the United States has achieved the record for the Largest Working Rifle. This monumental feat of engineering measures an astonishing 10.18m (33ft 4in) in length and was meticulously verified in Ishpeming, Michigan, USA. World Records Authority congratulates Mr. DeCaine on his extraordinary accomplishment and his dedication to this exceptional field.

Creating a fully functional firearm of this scale requires not just creative vision, but serious mechanical engineering expertise. Every component of a standard rifle — the barrel, action, stock, trigger mechanism, and sighting system — must be precisely scaled up and manufactured to work together reliably at dimensions that dwarf the original. At over ten metres in length, DeCaine’s creation is a breathtaking demonstration of what dedicated craftsmanship can achieve.

Ishpeming, Michigan — a city with deep roots in American mining and industrial heritage — proved a fitting home for this landmark achievement. DeCaine’s record reflects the same spirit of precision, resourcefulness, and hard work that has defined the region for generations.

World Records Authority celebrates James A. DeCaine for this remarkable entry in the official WRA global archives, recognising it as a landmark achievement in gunsmithing craftsmanship and large-scale creative engineering.