Switchback wrote:adjust your hop up. Take the barrel out of the unit, remove all the grease and then reapply conservatively. Replace it in your gun and try it.
What are you talking about? You don't apply grease to the hop up.
Look if your inner barrel fell all the way out of the rifle then something is seriously wrong, and needs to be reassembled correctly.
But if you can send it back do so. I don't know if having disassembled the receiver voided the warranty.