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M4 replacement screw and what's wrong with my rear sight???


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So One of the screws for my picatinny rail must have rotated out and just gotten lost. Could anyone direct me to a replacement screw? I'm hoping to get a Scalarworks mount eventually, but I think it needs the factory screws.


On another note... my M4 is dead on with the windage set at 0, but I'm wondering if I broke it. Over time shooting it, the windage will adjust far far to the left. This can't be normal!

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As for your rear sight, I'd take out the windage screw and see if the spring is OK. Reassemble if everything looks OK and try again.

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