MK2 Grenade

The Mk 2 defensive hand grenade (sometimes written Mk II) is a fragmentation hand grenade used by the U.S. armed forces during World War II and in later conflicts including the Vietnam War. The Mk II was standardized in 1920 replacing the Mk I of 1917. It was phased out gradually, the U.S. Navy being the last users. It was replaced by the M26-series and later M61 and M67 grenades. On 2 April 1945 the Mk II and Mk IIA1 were redesignated the Mk 2 and Mk 2A1.

The MK2 Grenade as well as a variety of other grenades were seen in the Grenade Crate in Morgan's Apartment. It can be presumed Rick Grimes took some grenades.