drobs - Never heard that before, but it doesn't mean you are wrong. Can you explain why it's better to use the same barrel/suppressor combination from the same manufacturer, vs. using a Glock OEM threaded barrel and a suppressor from whatever other company. After all, I would think that if a suppressor won't function properly with a Glock OEM barrel, it may not be that good of a suppressor.
Thanks
Baffle hits / that damage the suppressor are the main reason / concern. Using the suppressor company's barrel, the threading should be perfect. If for some reason the threading is off (not concentric) on an aftermarket barrel I could see the suppressor manufacturer requiring the user to pay for them to repair the suppressor.
I think you would be fine with a Glock OEM threaded barrel though. What are you gonna use it for?