Hi Tom,
If you read my post, it says “with or without the insert”. I too have purchased a couple of the plain black or “blued” front sights over the years. I think what Gutthooked is saying is that his sight is shedding the factory insert or is shedding a red paint that has been applied to the top surface. A picture would help identify his problem, but I understand the difficulty of doing so. I’ve not been able to do pictures since Photobucket.