gun-type weapon

gun-type weapon

A device in which two or more pieces of fissionable material, each less than a critical mass, are brought together very rapidly so as to form a supercritical mass that can explode as the result of a rapidly expanding fission chain.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
References in periodicals archive ?
She looked outside and saw Andrew Stephenson, 23, hurrying from the house carrying a long gun-type weapon. Police later recovered an air rifle pellet which had failed to smash the window.
We know that it takes about 50 kilograms (110 pounds) of 90 percent enriched uranium to build a gun-type weapon equivalent to the Hiroshima bomb.
He turned to get away "and all of a sudden another gunman appeared in front of us, carrying machine gun-type weapons. And he just started firing at us ...
After the meeting last night, several residents said that although certain types of hunting would be allowed under passive recreation, machine gun-type weapons are now in use at the site.