Hello, I'm selling 2 barrels for the FX Crown in 30 Cal. I bought the 600mm barrel of the forum here 6 months ago, and the 700mm barrel was bought brand new from another member unfired. Both come with pellet probes, and both have 1/2-20 adapters for the Donny Moderator. No trades or splitting up, Free shipping Lower 48, $300.00 Pay Pal F&F. Thanks.