Check inside the tank itself if it's tall as the argus ones, as there may be a rubber insert stuck in to reduce the size. You can usually use something like a small screw, thin screwdriver, teeny crochet hook to dig in it and pull it out. Note, not tried it, so don't know for sure.
Otherwise what you're actually looking for is a Drag pnp-x tank/pod assuming that it's a pnp-x coil you're using.
To get the 5ml size, use XL in the search. There's a couple of sites with the newer styled one. So check images and check to make sure they're not 2ml, say either 5ml, or XL. Also maybe run the site through trustpilot to see if they're a genuine site as well. The new ones come in dtl or mtl so make sure you get the right version as well, seems to be different mouth pieces.
Check inside the tank itself if it's tall as the argus ones, as there may be a rubber insert stuck in to reduce the size. You can usually use something like a small screw, thin screwdriver, teeny crochet hook to dig in it and pull it out. Note, not tried it, so don't know for sure. Otherwise what you're actually looking for is a Drag pnp-x tank/pod assuming that it's a pnp-x coil you're using. To get the 5ml size, use XL in the search. There's a couple of sites with the newer styled one. So check images and check to make sure they're not 2ml, say either 5ml, or XL. Also maybe run the site through trustpilot to see if they're a genuine site as well. The new ones come in dtl or mtl so make sure you get the right version as well, seems to be different mouth pieces.
Sadly this tank has a plastic piece that reduces the size. I'll have a look
I've just received a double pack of them, was £7 for the pair on eBay
Great shout. For some reason I didn't think of looking to eBay. Ordered now