Photon Grenades and mortar, in use in 2267.
Photon grenades are short-range, variable-yield explosive devices that generate a powerful electromagnetic pulse. These devices are capable of stunning humanoids in an enclosed area at lower settings. Photon grenades can also be launched with a mortar, to attack an enemy hiding in a defensive position and out of direct line-of-sight. (TOS: "Arena"; TNG: "Legacy")