What you need to do is remove the mag catch from the outer barrel. Once you do that the inner barrel and hop-up will be able to slide out. For my Well MB05 it was simply a small philips screw.
How do you get to the outer barrel?
I have a Mauser SR-22, but I cant get the outer barrel off to wrap the inner barrel. I cant find anything helpful on Utube either. Can someone help? 
By the way, I know how to take the whole barrel off of the gun, but I cant get the inner one out. :-/ Thanks.
Thank you very much, Josh
By the way, I know how to take the whole barrel off of the gun, but I cant get the inner one out. :-/ Thanks.
Thank you very much, Josh
