Flak vests were primarily intended to protect the wearer from shrapnel, the leading cause of casualties in combat [1][2]. They were mostly ineffective against bullets, particularly those fired from a rifle, though some could stop relatively weak pistol rounds. The US Army issued this series of vests starting in 1963; the term “M69” did not appear until the final iteration (after 1970) but it is being used as the title of this page since it is commonly used by collectors to refer to this type of flak vest with a 3/4 collar [1]. The version shown on this page is the one with an internal polyethylene stiffener between the 5th and 6th layer of ballistic nylon and zipper front closure, first produced in 1968 [1][3].

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US Army:

Great Britain in Northern Ireland (The Troubles, 1968 – mid 1970’s):

The British military used the same and similar derivative models of flak jackets during the Troubles in Northern Ireland, particularly in the late 1960’s – early 1970s’s.