Just a thought then... if we were to run our markers on compressed helium..... would they weigh LESS full than when empty? And if we ran a dump to the back block in order to breathe in the exhaust gas, would we all be laughing when the ref 1 for 1'd us? It's MY idea... i claim the royalties... The Happy Ultralite Air System....Making Paintball a faster, happier sport..