Reply To: What would your choice be?
The reason the bottle could not be removed on the FX500 was becasue the shroud interfered with it’s removal unless one loosened the barrel and partially removed it – that was with the old metal tank. Check with AOA to confirm but I believe with the new carbon fiber wrapped tank one can remove the tank without removing the barrel.
I have an FX400 in 22. A fellow shooter had the FX500 but I found it to be too long and insufficently quiet. In 25 I opted for a Daystate Airwolf with Hugget, a Cricket and a MArauder.