Ive seen those locally. Just so small though.
I have 6 inch pipe.
Hmmm - the price is great but the shipping will kill you on the cans!!I have 6 inch pipe.
I am also a HUGE fan of these:
http://www.armysurpluswarehouse.com/ammo-cans-storage-containers/120mm-mortar-can-2948.html
^these are big enough to hold 2 broken down AR's or AK size weapons plus ammo and mags.