Adam,,it is a custom built QB by Jack Haley, I have never chronied it but when I bought it,I was told it was shooting in the upper 800 fps,,,the gun is amazingly accurate,which it should be with the L.W. barrel....Chris Fatback has shot this gun when I first got & he can tell you how amazed he was with it's performance,,I am suprized it's still here,,,,,,I would refill it after 30-35 shots with plenty of air left..Gene it is HPA!!!!!!This a perfect hunter,,,I haven't shot it outside because I have issues with my stocks staying perfect,,,
This would be a perfect hunter!!!