specna arms sa-c09 core wobbly barrel

[Pluto-]

I am extremely new to airsoft got my gun a few days ago, and my barrel is very wobbly could someone help tell me how i would fix this 

[Rogerborg]

Wow, that is pretty bad.  Have you removed anything from it, like a front sight that was also acting as a shim between the barrel and handguard?

 

If not, I'd go ghetto and just wrap some electrical tape around the outer barrel to pack it out.

[Sawyer]

If you got it a few days ago, send it back. Don't fuck with it, if you do you'll likely be stuck with a broken gun you can't get a refund/exchange on.