US M1956 Field Pack., This is a genuine US military issue butt pack and would have been worn as part of the webbing by troops in Vietnam., This is
Vietnam Equipment page 2
60s Vintage US Military M1956 Butt Pack w/ GP Strap – Omega Militaria
Old US Vietnam War to 1990s era M61 Butt Pack Backpack M56 Suspender Set ( USED)
60s Vintage US Military M1956 Butt Pack w/ GP Strap – Omega Militaria
U.S. Vietnam War M1956 Canvas Field Butt Pack Repro – GRANDPOPSARMYNAVY
My Not Quite Complete Vietnam Era Web Gear : r/Militariacollecting
M1956
Old US Vietnam War to 1990s era M61 Butt Pack Backpack M56 Suspender Set ( USED)
Vietnam War - DALLAS MILITARIA
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M56 Field Pack Canvas Vietnam M56 Butt Pack