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The Mk-54 design is a detailed representation of the arming system for the "Little Boy" atomic bomb, incorporating a 24-inch black steel gun tube. It includes a nuclear trigger charge housed inside with a black steel sizing collar and base plate. The design features recesses for two squib cells, each approximately the size of a silver dollar, weighing 0.25 lbs. The assembly is engineered for official use only and is intended for FBI Academy–BSU Unit applications. This sophisticated design emphasizes the technical intricacies behind nuclear armament systems.
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Mk-54 ("Little Boy" design using U-235) Arming/Timers Black Steel Gun Tube 24” High, #10 can size wide Inside tube is the nuclear trigger charge Black Steel sizing collar Black Steel Base Plate Bottom recesses for 2 squib cells 3 Nuclear “O” Rings Slightly convex Squib cells Silver dollar size Wt. 25lbs each 14 inch diameter Three inch thick Six diameter hole For official use only – FBI Academy – BSU Unit