This does look good! Why even fire the Californium? Just sprinkle it on the ground and let the ridiculous amount of neutrons it emits do the job.
Like a lot of things, it is the sheer goofiness of the concept that appeals to me. A 20mm Davy Crockett? What's not to love?
This is actually a very old concept on my bench. Back in the 1980s, a company called Gamescience released a series of Star Trek ship in
styrene plastic. I had several, including the 'Dreadnought', which had a slightly thicker saucer section. I used that to create a earlier, smaller
version of this build with a turret fashioned from a spare aircraft wheel and some landing gear bits. I know it is still lurking in storage someplace in
the shop...