Just received my new (Chinese-made) Orion Tri-Mag Barlow last week.
Optics appear to be very good and she's definitely a keeper. However, after a couple of nights of lunar observation, it became obvious that there was a serious glare issue.
Now, while I like what they did with the micro-baffling (is that what it actually is?) inside the lower part of the barrel, the black paint they used is glossy and almost reflective -- to the extent that it negates any benefit provided by all those wonderful little baffles. In fact, the glare from the first quarter moon was so bright and distracting that it basically rendered the Barlow useless until it was addressed, somehow.
After a bit of frustrating trial-and-error with a can of mislabeled black semi-gloss (but labeled and sold as "Ultra Flat" -- thanks for nothing once again, Amazon) Krylon spray paint, I eventually broke down and installed a small strip of Protostar FlockBoard inside the Tri-Mag's lower barrel.
Was this ever a problem with the older Tri-Mags, before they were made in China? I'd love to know . . .