Mk2 マークII手榴弾 Mk2手榴弾 マーク2手榴弾
The [b]Mk 2 grenade[/b] (Mk II) is a fragmentation-type anti-personnel hand [[grenade]] introduced by the [[United States]] [[military]] in 1918. It was the standard issue anti-personnel grenade used during [[World War II]], and also saw limited service in later conflicts, including the [[Korean War]] and [[Vietnam War]]. It replaced the failed Mk 1 grenade of 1917. The grooves and knobs gave the Mk 2 appearance of a [i][[pineapple]][/i], and are the origin of the nickname.

It was gradually phased out of service as the [[m26 grenade|M26]]-series grenade was introduced during the Korean War. Due to the tremendous quantity manufactured during WWII, the Mk 2 was still in limited issue with the [[united states army|US Army]] and [[united states marine corps|US Marine Corps]] throughout the 1950s and 1960s. 

h1. See also
* [[list of weapons]]
* Wikipedia entry: "Mk 2 grenade":[https://en.wikipedia.org/wiki/Mk_2_grenade]
mk2 grenade