To rule it out, check to make sure your upper receiver's latch notch isn't rounded out. Also, check the latch itself. Both should have square interfaces.
Good call. I checked and its starting to peen a little. I think this CH Is just a bad design. The first one I had didnt even work, and now this one seems to disengage too easily, putting too much pressure on that little notch and removing aluminum.
Good to know, but I was hoping this wasn't the case. There really isn't much that can be done to repair that unless you get adventurous with a Dremel. Maybe someone else can help with a good method other than replacing the UR and CH.
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