The file 'B-61 Nuclear Bomb 3D Printer Model' is (stl) file type, size is 302.2KB.
This is a B-61 nuclear bomb. I couldn't find a model of one on here so I made my own using Fusion360. Print upright and if you use Cura, select "Print thin walls" and use 0.2mm of Horizontal Expansion. Print with support.