I have a 68ci 3k Flatline, and recently the fill gauge has stopped reading reliably.
Is it just a standard gauge, or is it AGD specific? Can I replace it with any old gauge? I don't see any for sale on airgun.com...
Is it just a standard gauge, or is it AGD specific? Can I replace it with any old gauge? I don't see any for sale on airgun.com...

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