Definitely a possibility that can't be discounted.jeep45238 wrote:They won't do 4moa or better in my experience. It's entirely possible that some dirt got wedged where the pop up portion interfaces with the bottom in the up position which changed my zero big time. Folding then popping them back up may have let the grit come out and go back to almost zero.
You also didn't by-chance get the PSTs, did you? Did the sights come from a reputable origin?
Both the Troy folding - as well as others of similar design, such as the MI - as well as even the DD fixed that we both touched on are each well over 2x the cost of the Magpul polymers.My point is that for the money there's better options as a main sighting system.
That's the thing with the Magpul polymers: they fill a niche. Again, with my limited knowledge I don't know if anything else is a valid and proven choice at this price-point.

Although that's not an invalid statement, I nevertheless think that it is too strong of an assertion/assumption.I have a good feeling that many folks wanting to use them are typically using optics and only use the buis occasionally. And I'm also willing to bet a pancake that they're content with grouping 7 inches at 100 yards.
Even given my very limited experience with this platform and the few hours that I've been in classes with the AR, I've had one set of classes that were dedicated to iron-sight use, and several students used the Magpul polymers. Granted, zeros were only printed at the 50, but given most of the groups put forward by the shooters, they would have been well within 4 to 7 MOA, even if that was shot at the 100. And given the amount of precision/accuracy we were held to at the 25, shots that were printing "barely on paper," as you describe (I'm assuming that this relates to your Appleseed experience, and that this was not at KD Appleseed distances) at that distance certainly would have been problematic and unacceptable. I honestly cannot remember any student's folding sights, be they the Magpul polymers or their metal "Pros" (this was before the LD variant, however; but I have not heard of problems with that, either) or Troy/MI/Diamond Head or various fixed sights (LMT, DD) being problematic, even as we repeated folded and deployed them during line breaks as show-and-tell to our fellow students.