I a little bit stumped over there being electric-shock bullets when no grenades deal electricity damage. Grenades in our time are more varied in use than bullets thanks to their payload space, so why hasn't anyone made a shock grenade?
My first thought was that you could make a grenade that spins rapidly through the air on a vertical axis and releases geckogrip stripped contact wires via airburst. There are a lot of flaws with that though, you can figure them out for yourselves.
My second idea doesn't require airburst, but it does require more dedicated engineering. You shoot the grenade, and it detonates with many small charges sending a lot (I'm not picking a number but you could stuff a lot in there) of small contact wires like the one above. It might be more effective, although way more expensive, to line, or tip the wires with mono-wire to get the contacts through armor. Although considering no one seems to give a damn that stick and shot bullets don't have to penetrate armor I don't see that being a big problem.
Your thoughts?