I just put a 2 MOA red dot on my M4gery. I have not sighted it in yet. It co-witnesses with the A2 front sight and the BUIS rear sight (if the rear is flipped up). I also have an extender that will raise it a half inch if I want to.
Question: It it better to have the red dot co-witness with the front sight, or raise it a bit so it clears the front sight?
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