A Prodigy Gunsmith stranded in a fantasy world.

John Colt, the great, great, great, great grandson of the famous Samuel Colt. Lived a not-so-famous life, an outcast within his high school. He was what you would call a computer geek, spending most of his time building drones. But no one really knew that this eighteen-year-old was already a master Gunsmith who could develop his first firearm at the age of five. On the day of his class's boat trip, they entered a storm that brought them to a world far different from the one they were used to. Will John Colt leave his name on this world for his firearms or technology? Or with something else. — Description from novelcodex.org