Increasing air supply

Has anyone ever seen an external air bottle, like a pony bottle, used as an extended air supply. Connecting and keeping an external air bottle connected to a PCP to extend the air supply so that you could have a much larger air reservoir than that with which the gun is equipped

Just wondering how to make a Diana Stormrider be a more viable air rifle by keeping the air supy and pressure level up. It is only a concept at this point.
 
Has anyone ever seen an external air bottle, like a pony bottle, used as an extended air supply. Connecting and keeping an external air bottle connected to a PCP to extend the air supply so that you could have a much larger air reservoir than that with which the gun is equipped

Just wondering how to make a Diana Stormrider be a more viable air rifle by keeping the air supy and pressure level up. It is only a concept at this point.
I did see a inline regulator people can use while tethered. https://lethalair.net/shop/ols/products/micro-inline-adjustable-regulator-pre-order
$$$$ ouch
 
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Maybe something like this????
test2.jpg


Stuart