So, I haven't actually gotten to put them on yet. But, I can tell quality when I see it. I have an old 90's MIM that I'm slowly trying to mod, and I just haven't gotten to that point yet. But I've lined them up, and inspected them pretty thoroughly. There's no flashing, points, or anything like that from manufacturing. And, everything seems like it should be a perfect fit.I'm hoping to get them on in the coming weeks. But, just from what I see, I'm genuinely impressed with the quality of manufacturing for such a reasonably-priced item. I'll report back if I have any issues, but I genuinely don't expect any.