A Stun Grenade, also known as a flash grenade or flashbang, is a grenade with several chemical and metallurgic properties that result in a loud pop and blinding flash of light when detonated. This grenade is meant to cause temporary, not permanent damage, and is great for non-mortal wounding, though it is often used as a precursor to armed conflict to clear rooms and buildings.
The Stun Grenade will cause strong disorientation to everyone within the blast radius (~5m) in the form of a loud ringing and a strong reduction in framerate. If detonated within a player's cone of vision (based off the FPS camera), the player will be completely blinded by white light for several seconds. (Exact timing stat needed)
M84 Stun Grenade. (Make victims blind, deaf for max 10 sec.)
~ In-game description
Update #38 (Season 6 - Update 6.2) - vN/A
Frag and Stun Grade visual effects have also been updated, alongside a more realistic Frag Grenade sound.
Increased indirect hit effect radius.
Up to 6.5m, from 5.5m.
Ringing sound now impacts players through walls.
This matches the Frag Grenade mechanic, although the impact effects a smaller radius.
Added slight camera shake to players near the explosion.
Default fuse time mechanic:
Stuns now explode 0.7 sec after first impact, or after fuse timer runs out, whichever comes first.
Fuse time without cooking has been increased to 5 sec.
2.5 second fuse timer when cooking the stun remains unchanged.
Pre-release #32 (Season 4 - Update 4.2) - vN/A
Throwables Friction Adjustment
Adjusted the friction force of throwables to make rolling movement more consistent and predictable.
Stun Grenades & Frag Grenades has had friction force decreased to speed up the rolling speed and increase distance they can travel after impacting surfaces.