Im sorry, I finally understand what he's trying to say (after reading the post a few times I think most are misunderstanding.)
Look at the listing: the CO2's pressure can be limited only by injecting gas only (no liquid) if you fill the mag with liquid as would be required for a GBB to operate repeatedly it would have to be 800psi.
therefore you COULD fill your GBB mag at propane pressure with co2 but only in the gaseous form, which would run out after a few shots. Thats why he says you will consume the dry co2 very quickly.
for filling grenade shells at different pressures this would be fine, allowing you to fill at different pressures. However, this is not going to replace the airsoft innovations propane adaptor for filling GBB mags.
Edited by Death By Cadbury, 16 May 2006 - 03:09 AM.