Hey out there in plett land hope all is well. I have up for sale is a like new .177 500mm crown barrel kit. Got this two weeks ago and like my impact in .177 better. So I tuning my crown back to .22. This is a 500mm super light barrel with Superior pellet liner it will come with two magazines two pellet probes one pin one pellet .Barrel also has Huma high flow Port installed. 300.00 shipped CONUS. PayPal ff. Thanks for looking.