A stun grenade is a thrown weapon that appears in Fallout: New Vegas, Fallout Tactics and Van Buren. 閃光彈（英文：Flashbang，Stun Grenade）又稱致盲彈、眩目彈或眩暈彈等，是一種以強光阻礙目標視力功能的一種非致命性手榴彈。同時產生的噪音以及強光, 能引起暫時性的失明和耳聾and loss of balance from disruption to the fluid in the ear.
A less-lethal alternative to a traditional grenade. Flash bangs deal very little physical damage, 但其產生的噪音以及強光可以眩晕敌人造成傷害。
This grenade cut from Fallout: New Vegas was meant to inflict fatigue damage to targets, allowing for a less-lethal explosive weapon. Typical of stun grenades, a bright light accompanies the detonation, which can momentarily blind or blur vision.
Flash grenades, by themselves, do very little harm. They instead use a magnesium core to release a blinding flash upon detonation, stunning opponents caught in the blast radius.