Since the damage changes 1.12 introduced rubber slugs and shotguns are the only way to relatively safely uncon a player as you now need multiple hits with sledgehammer and shovel to reach the shock threshold.

This leads to fewer player interactions because of a big chance that they simply die (on top of the voluntarily respawning some use to escape being restrained)

The dart gun with some kind of tranquilizer darts is already in the game files and could be a great addition to this now created niche of "shock control" without hurting player health.

Best if it could also be used to dispose of animals without killing them.