— Battlelog description
Hand grenades return in Battlefield 4 and function similarly to its predecessor Battlefield 3. The M67 Frag is the default for all players. However, new grenades types have been added including the M34 Incendiary, M84 Flashbang and hand-thrown Smoke Grenades. The M67 hand grenade deals the most damage at once of all of these and has a larger radius, but each kit only gets one M67 hand grenade.
Pressing the grenade throw button will have the player character pull out their grenade, pull its pin and throw it out. Holding the grenade throw button will have the player character pull out their grenade and making it the player's active weapon. The player can then pull its pin and throw it by using the grenade throw button or the normal attack button.