Tuning Are the in cylinder Huma-Air regulators standard sizes in terms of the regulator tester?

I have the Taipan Veteran (first edition) that I love. I've had it for almost 4 years now and I don't foresee myself getting rid of it. As it's been discontinued, I know accessories for it will become harder to find. I just bought the tactical stock for it since I loved the way it looks when I first saw it 3 years ago. I read somewhere that they're not making that stock anymore.

As for my question, my Taipan has the Huma-Air regulator. I don't have any plans to change the tune right now but I really want to have the regulator tester for it when I do. Are the Huma regs standard fit or are they custom to certain guns? If they are standard, I will feel comfortable holding off in buying the tester for now.