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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
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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