This is a rifle made in Sweden by FX Airguns AB.
It is therefor very easy to strip and service.
Here is a blueprint of the rifle:
http://usera.imagecave.com/Johnny/FX2000-Blueprint.gif
Here is a pic of the internal parts on FX2000:
http://usera.imagecave.com/Johnny/InutiFX2000.bmp.jpg
Is there anything special that you are wondering about..?