A little help with fittings please

Ok so I have just got into pcp air rifles. I got a Brocock Concept Lite and Sniper magnum. The concept lite doesn't have a foster and my extra foster male piece isn't even same thread or anything. Where can I get a female thread x male foster that will thread onto the fill adapter? Also the female foster that came on my compressor seems a little off from the long one that came in the sniper magnum box and the male thread isn't the same. I would like someway to put the longer one that came with the gun onto my compressor connector. Any help would be greatly appreciated.

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