The story of Rock River Arms began in 1996, when brothers Mark and Chuck Larson, leveraging decades of experience in the firearms industry, set out to build a company rooted in precision and innovation. Having honed their skills at Springfield Armory and through partnerships with other custom pistol makers, the Larsons launched Rock River Arms in a modest 1,800 square foot shop in Cleveland, Illinois. Their early focus was on custom 1911 pistols, quickly earning a reputation for exceptional fit and finish. As the AR-15 platform gained popularity, the company shifted its expertise to producing rifles that would set new benchmarks for quality and reliability. This dedication paid off in 2003, when Rock River Arms secured a major contract with the DEA after outperforming competitors in rigorous testing. Over the years, the company has expanded its product line to include a variety of AR-15 configurations, bolt-action rifles, and accessories, all manufactured in their state-of-the-art Colona facility. Despite the passing of co-founder Mark Larson, the company remains family-run and committed to its founding values. Rock River Arms continues to innovate, serving civilian, law enforcement, and military markets with firearms that reflect a legacy of craftsmanship, resilience, and forward-thinking design.[1][2][4][5][6]