Mk 2 grenade
Videos
The Mk 2 grenade is a fragmentation-type anti-personnel hand grenade introduced by the United States Armed Forces in 1918.
World War II–era Mk 2 grenade
![Instructional document showing correct throwing technique (1918): "Correct position of thumb when throwing […] is important for otherwise firing lever](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/111-SC-7377_-_Hand_Grenade._Holding_position_and_parts._Correct_position_of_thumb_when_throwing_hand_grenade._This_is_important_for_otherwise_firing_lever_will_not_be_thrown_over_wh_-_DPLA_-_35e69ed7fd23f2867985da037acc4b48.jpg/500px-111-SC-7377_-_Hand_Grenade._Holding_position_and_parts._Correct_position_of_thumb_when_throwing_hand_grenade._This_is_important_for_otherwise_firing_lever_will_not_be_thrown_over_wh_-_DPLA_-_35e69ed7fd23f2867985da037acc4b48.jpg)
Instructional document showing correct throwing technique (1918): "Correct position of thumb when throwing […] is important for otherwise firing lever will not be thrown over when grenade leaves the hand."
Post World War II-era Mk 2
Bottom of a 1920–1942 baseplugged Mk 2
Mk 1 grenade
Videos
The Mk 1 grenade is a fragmentation hand grenade used by American forces during World War I. According to its designers, it was to be the "simplest", yet most "fool-proof", grenade ever made. However,
Mk 2 grenade
…grenade used during World War II, and also saw limited service in later conflicts, including the Korean War and Vietnam War. Replacing the failed Mk 1 grenade of 1917, it was redesignated the Mk 2 on 2 April 1945. The Mk 2 was gradually phased out of service as the M26-series (M26/M61/M57) grenade was introduced…
The Mk 1 grenade