First, imagine a normal sphere. Take a great circle from that sphere, and cut it into an infinite number of infinitely short segments, and arrange those segments to form a sphre, aligned so that a point traveling along the original great circle and now skipping from each segment to the one that would have followed it would traverse each segment in the same direction relative to the center of the sphere. I *think* this is how a hypersphere should work...

The technobabble comes in when you make each of these circle segments into a grain of some lasing crystal, with a partially transparent phototon-teleport douletalk mechanism on either face of the crystal segments, and a strobe in the center. The strobe pops. Photons get pumped into the crystal, which begins to lase. You get an onmidirectional burst of very fine laser beams for as long as it takes the reaction to decay, unless the strobe keeps going to feed it. Et viola, laser grenade! Just remember to give it a limited power supply and or a remote shutoff, unless you want the area permanently denied. The Golf Ball of DOOM!

- CD