The Stun Grenade is one of two different tactical grenades that appear in Fallen Nation. It is best used when turning corners, as an enemy may be around, and will be incapacitated long enough to be ambushed. It will greatly reduce movement speed and sensitivity but is easily countered by running. It's ability to incapacitate the enemy by slowing down their movement is a valuable tool for killing an enemy player.
The R70-CS Stun Grenade (RosArms 'Bee Swarm' R70-CS Incapacitating Grenade) is a fragmentation grenade manufactured by Rosarms Industries. Those standing within a 5-meter radius are hurt by the rubber shrapnel and disoriented by the CS gas.
These grenades detonate upon impact with the ground, and has a stun and damaging effect, severely affecting the enemy's ability to counter-attack. The Stun Grenade is effective for close-range defense, as two hits will kill an enemy. However, in these situations it is important to avoid hitting yourself.