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Posted: 10/11/2016 2:14:00 PM EDT
I found a post for this on this site but couldn't reply because it was closed/archived.

The consensus is flip forward, but why?

Why not flip backward?

Or is it a matter of personal preference?

Thanks

mm




Link Posted: 10/11/2016 2:35:03 PM EDT
Its just engineering, and simple at that. If the rear sight were made so the aperture rose to the rear, it would take up more room to the front, where most likely an optical sight/scope would be installed, possibly causing a conflict. Probably also involves aperture sights and eye relief considerations too.
Link Posted: 10/11/2016 4:01:34 PM EDT
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Quoted:
Its just engineering, and simple at that. If the rear sight were made so the aperture rose to the rear, it would take up more room to the front, where most likely an optical sight/scope would be installed, possibly causing a conflict. Probably also involves aperture sights and eye relief considerations too.
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All this, but it pretty much only applies to rear BUIS.  With the front BUIS, it really doesn't matter.  I've mounted front BUIS "backwards" in order to get a LAM scooted as far forward as possible.
Link Posted: 10/11/2016 7:13:15 PM EDT
Space. On my HD rig folding the rear sight backwards I can mount it farther to the rear and the sight does not take up rail space on the upper. The front would not matter as much. As it takes up the same space either way without pushing it forward right over my muzzle (9" barrel with 8" rail). Right now it is mounted the same as my rear (flip to front) but if I switched it, it would put the sight deployment a little more easily accessible I think. And I think I'll try it.
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