William R. Burkett, Jr.

stunner n.	1964 W. R. Burkett Jr. in Analog Science Fiction/Fact Aug. 69/2 The scope’s crosshairs shifted to the nearer robot’s right hand. In those steel fingers reposed a silvery, fragile-looking gun—a stunner. And each of the others were similarly armed. So if the Llralans had sent them after him, they had not been able—or had not chosen—to override their inbuilt inability to permanently harm human beings. If spotted and shot at, the worst that could come of it was stun-shock and capture.