Hi,I have just bought a kwa hk45 and I would really like to put a suppressor on it and run a longer inner barrel through it. I’ve seen outer barrels online that would fit and stick out the end with a thread however I am cheap and do not want to fork out £80 or so on a new barrel.I was thinking about using a tap and die tool to thread the existing outer barrel and then file away at the slide to attach the suppressor if that makes sense. Does anyone have any experience with this and if it would work? Any help would be much appreciated thank you.Attached are some pics of the pistol and the barrel.Thanks,Cameron