The Colt Competition Eli Whitney Pistol is a tribute to the contributions made by Eli Whitney in the evolution of modern firearm production. While best known for the invention of the cotton gin, In 1798 , Whitney built a factory for mass producing muskets for the US Army from interchangeable parts. Sam Colt later collaborated with Eli Whitney Jr. to successfully integrate the assembly line and interchangeable parts into what became Colt’s Patent Fire-Arms Manufacturing Company in Hartford,CT. Flash forward 150 plus years to the refinements and precision we enjoy today from Colt in the ELW 1911.