That's a good question. The canteen isn't what goes into the cooker, the cup is...but they're a similar size and shape so it's possible.

The price and availability of surplus around here has gone to crap since the latest war in the middle east. Ordering from the states has been the best way to go...especially with the Canadian dollar doing so well. And since I was ordering stuff from them anyhow, I got the whole gamut as it's cheaper packaged.