The Mk 2 Grenade, also known as the "Pineapple Grenade," is a hand grenade used by the United States military during World War II and the Vietnam War. Its distinctive design features a segmented body that resembles a pineapple, which helps to create shrapnel upon detonation. The grenade is filled with explosive material and is activated by a safety lever and a fuse. The Mk 2 Grenade has an effective range of about 30 meters and is designed for anti-personnel use. It can be thrown by soldiers to incapacitate or eliminate enemy forces in combat situations. Its reliability and ease of use made it a popular choice among troops during its service.