Length : 320cm
Diameter : 71cm
Weight : 4.5t
........

『1・・・Polonium and beryllium neutron source
 2・・・Uranium-235 (hollowed out the ‘‘target‘‘)
 3・・・Uranium-235‘‘bullet‘‘(rammed into the ‘‘target‘‘ to create a critical mass)
 4・・・Exploive
 5・・・Detonator for propellant』