Hi all I was wondering if anyone could show me where I can buy a Co2 regulator for a disposable cylinder (like the welding ones). I've found that, as long as I buy them from Machine Mart on a VAT free day, they work out cheaper than buying a fire extinguisher and refilling it (since refils are Â£15 for 500g in MA and it's Â£7.99 for a 600g bottle). The problem is, I can't find a regulator that fits! Any links would be most helpful. Thanks!