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Posted: 3/22/2008 11:08:00 PM EDT
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can sum1 explain this to me in newbie terms? looking at the flip up rear iron sight ARMS #40LSP... |
| The aperture is the hole that you look through on the rear sight, and by rotating the piece with the hole you change the size of the hole. On the original A2 rear sights and on most flip up rear sights with two apertures, the center of the aperture is at a different height. I believe the center of the CQB aperture (the larger ring) is lower than the center of the much smaller precision aperture. I'm not sure why, someone else will have to explain that. The 40SP model sights from A.R.M.S. and the Troy Folding Battle sights have two apertures with the same centerline so that the there is no change in zero when switching apertures. |
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Quoted: I believe the center of the CQB aperture (the larger ring) is lower than the center of the much smaller precision aperture. I'm not sure why, someone else will have to explain that. quote] The non-SP versions are setup similar to the standard A2 rear sight. So the big hole is for 0-200m and the other one flips up for the 300m distance. It just doesn't have the height adjustment like the A2. I think the SP sights are better since there are no height adjustments on them. I like hte smaller aperatures even for close in shooting. I really like the GG&G MAD rear sight with 4 SP aperatures. If you want to have adjustments for different heights, get an A2 rear. Other than that, I would go SP. |
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