Jonathan of Royal Armouries has a special festive treat for you today: a conservation-wrapped box containing a shiny surprise—the Aluminium Model 1928 Thompson "Tommy Gun." As he unboxes this iconic firearm, he delves into its fascinating history, from its distinctive "I Next to the U and N" marking to the mysterious droop often associated with these models. The discussion then turns to the science behind the gun's construction, particularly the intriguing choice of Duralumin for the receiver. Jonathan compares this material to other potential options, including Kodak's plastic, and explores the implications for collectors and enthusiasts. By examining the weight, ownership history, and unique characteristics of this aluminum Thompson, Jonathan offers valuable insights into this remarkable piece of firearms history.