Piston Seal replacement mandrel tool - where can I get one?

[bdzjlz]

I now own several spring piston rifles, i.e. TX, Weihrauch, Walther, etc.

Where can I purchase one of the piston seal replacement mandrel tools? It is shown being used by various people in videos, but I can't find one to purchase. I checked on the Air Arms site.

Thanks in advance for your help....

 

[marflow]

most tools are home made and fall in the class of tricks of the trade

now i only know first hand about Diana pistols and they need a tapered mandrel to install there piston seals and even at that can be tricky 

because you need something to slide the seal off the mandrel on to the piston head at the same time keeping it centered, so a socket and clamp and something like glue dot for the mandrel to stay center 

and after a few tries you should have it 

other seals are not that hard and all you do is warm them up and install them 

all i have but part of this hobby is the need to make your own tools, how to do something with what you have, using your imagination to solve a task 

but that's just me i guess