The M1903 haversack was designed to be suspended from the eyelets on the new M1903 cartridge belt, although it could be used with the old leather sling as well. Haversacks include leather liners for utensil and cloth condiment bags that were normally issued with the haversack. Leather slings are sold separately. Specify model and marking desired.
Go to this web page for additional information on Haversacks:
http://www.history.army.mil/html/museums/messkits/Field_Mess_Gear%28upd_Jul09%29.pdf
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