"Goodfellow," Washu answered.

Goodfellow? Why did I have the feeling that I was about to see the law of inverse lethal magnitude go into play?

"This is something of a personal design," she continued. "I figure, if you really need some firepower at some point, having a few of these on you will bridge the gap without making you 'too powerful'. They're mechanical analogues of Masu physiology. Material casing, with a gel layer of the neutral material, with a filament core of the anti-material."

[...]

"Aim," she continued. "But DO NOT fire."

I sighted up my target.

"Now turn your head," She continued. "Do not look directly at the blast."

I did so. Yes of course, antimatter annihilation. Pure radiation... Just like a nuclear flash.

"Fire," she instructed.

'Crack!'

There was brief pause, which ended with a blinding flash of light reflecting off my leatherman. I hadn't even noticed it was sitting right in front of me as I stared at it. The flash was followed a moment later by a loud boom and a burst of wind blown dust.

"Gah!" I snapped, big red and green blobs now dancing right in the center of my vision. "Dammit!"

"What?" Washu commented. "You okay?"

"I'm fine!" I returned, trying to blink the blobs away despite knowing that blinking had nothing to do with it. "Just caught the reflection."

After a minute of waiting for the obnoxious colors in my vision to fade, Washu once again handed me my binoculars.

"Oh yeah," I commented after getting a good look. "It's dead."

The spot where the last target had been was nothing but a small, smoldering crater.

[...]

The warning she gave me about the Goodfellow round was much simpler. Everything within' twenty meters is toast, and anything out to fifty is probably not getting back up. Do not look at the blast, and there is no minimum arming distance. So be aware.