Thank you for all the input guys. This is the type of feedback I needed. I have spent months trawling the internet to no avail. My local (ish) gun shop has closed down now but it wasn't the biggest of shops either.
The weihrauch was going to be my mod of choice and I think you guys have now cemented that.
I did see a YouTube video of an X3 custom silencer that is supposed to be the world's quietest and it says it's made by A&M gunsmiths and their website says it can be obtained through daystate but the only daystate mods I can find look nothing like their one???
Chris