Samuel Colt built his revolver factory in Hartford on interchangeable parts decades before Henry Ford ever assembled a car, and this film argues he deserves the credit history gives Ford instead. It traces Colt's assembly-line methods and the machine tools that let unskilled workers produce identical firearm components at a scale no gunsmith's workshop could match. The story then jumps to Soviet Russia, where Mikhail Kalashnikov designed the AK-47 not as a triumph of precision engineering but as a weapon built to survive it: loose tolerances and simple stamped parts that could be manufactured cheaply in factories with inconsistent quality control, and that kept firing even when caked in mud or sand. Interviews and archival material lay out how the two weapons, born from opposite manufacturing philosophies, both became the most influential firearms of their eras. The film treats manufacturing choices as historical forces in their own right, showing how a factory floor in Connecticut and a design brief in the USSR each reshaped how wars would be fought.