WEIHRAUCH HW77 piston and compression tube

Krale might ship to you. You might be able to find Beeman parts in the USA. Same parts as hw. Sorry I couldn't be more help

Longshot but maybe call AoA, 480-461-1113. If nothing else, they might be able to point you in the direction of one.

Don’t know about the US but Sevon08 put me on to this mob in the UK for my HW50S 

Gary

https://www.gunspares.co.uk/products/24571/HW77/

https://www.airgunspares.com/9202hw77hw97compressiontube.html

Pyramid Air unsure what size theirs are backordered till Sept. 21st call them to see what size.

https://www.pyramydair.com/s/a/Beeman_Weihrauch_HW97_Compression_Tube/8615 

You can't buy a new 25mm anymore, they are all 26mm. 

Id order it from Chambers in the UK and be done. They are great to deal with. 

If Pyramyd says they will have them in stock on a certain date, my experience has shown that they very most likely won't. I wouldn't waste my time personally. 

What's wrong with your old tube? I'm not sure I grasp what you are saying about the button? Usually a buttoned tube or cylinder is a good thing, if we are talking about the same thing here.

Check with Kirk (Spiral Groove) on GTA. He buttoned that one up and may still have the original piston, Dan.

Where did you end up ordering from?