That's what I gathered from a visit to a military surplus place but was not sure if there were additional criteria...

There was a whole setup inclusive of pack, sleeping bag, poncho, bivy, mess, canteen, etc for sale - only 145 bucks. A dollar per pound.
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"In the beginner's mind there are many possibilities. In the expert's mind there are few." Shunryu Suzuki

http://hikeandbackpack.com