Thread: M4 Carry Handle
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Old 03-10-2018, 08:52 AM
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vonn vonn is offline
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You tube rear sight assembly and it will be clear . I believe the screw you are asking about is used for setting the proper position of the sight and once assembled properly should not need adjusted again. The elevation knob should turn free with detents holding the settings. Properly adjusted the A2 sights are very good irons.
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