A rifle grenade is a grenade that uses a rifle-based launcher to permit a longer effective range than would be possible if the grenade were thrown by hand.
Mills bomb N°23 Mk II, with rod for launch by rifle
Mills N°36 rifle grenade, with its gas check disk for use with cup-launcher
Diagram of a Babbitt rifle grenade, as used in the Springfield 1903 rifle
French V-B rifle grenade, a bullet trap type. Top shows views and cutaway of the grenade, bottom shows the grenade and grenade launcher, which is affixed to the rifle. Cross-section shows that the grenade is a pass-through design, allowing the use of live ammunition. Arming tab, activated by the bullet's passage, can also be seen.
A grenade is an explosive weapon typically thrown by hand, but can also refer to a shell shot from the muzzle of a rifle or a grenade launcher. A modern hand grenade generally consists of an explosive charge ("filler"), a detonator mechanism, an internal striker to trigger the detonator, an arming safety secured by a transport safety. The user removes the transport safety before throwing, and once the grenade leaves the hand the arming safety gets released, allowing the striker to trigger a primer that ignites a fuze, which burns down to the detonator and explodes the main charge.
Replica WW2 Hand grenades on display
Hand grenades filled with Greek fire; surrounded by caltrops (10th–12th centuries National Historical Museum, Athens, Greece)
Mongolian grenade attack on Japanese during Yuan dynasty
Seven ceramic hand grenades of the 17th Century found in Ingolstadt Germany