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Posted: 1/24/2021 9:39:51 AM EDT
[#1]
25 meter is the army standard for any and all M16 series weapons.
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Posted: 1/24/2021 9:42:30 AM EDT
[#2]
Quote HistoryQuoted: 25 meter is the army standard for any and all M16 series weapons. Do you know which aperture would be correct |
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Posted: 1/24/2021 2:35:06 PM EDT
[#3]
Quote HistoryQuoted: Do you know which aperture would be correct Quote HistoryQuoted: Quoted: 25 meter is the army standard for any and all M16 series weapons. http://www.combatsimulations.com/ar15/zero-a1.htm The "L" marked aperture is used to zero the M16A1 rifle on the 25-meter range. Once the zeroing is complete, flipping the sight to the unmarked aperture will cause the sights to be zeroed for 250 meters. Flipping the sight back to the "L" marked aperture will automatically extend the zero to 375 meters without additional adjustments to the front sight post. |
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Posted: 1/24/2021 6:53:44 PM EDT
[#4]
Quote HistoryQuoted: The "L" marked aperture. Most of the images are missing, but this excerpt from the OCT87 version of the Soldier's Manual Of Common Tasks gives the procedure. http://www.combatsimulations.com/ar15/zero-a1.htm The "L" marked aperture is used to zero the M16A1 rifle on the 25-meter range. Once the zeroing is complete, flipping the sight to the unmarked aperture will cause the sights to be zeroed for 250 meters. Flipping the sight back to the "L" marked aperture will automatically extend the zero to 375 meters without additional adjustments to the front sight post. This. And the A1 (M16A1) is not a carbine..... I'm confident the OP was asking about a carbine with A1 sights. Yes, 25 meter sighting in. |
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Posted: 1/24/2021 7:02:55 PM EDT
[#5]
The Canadian Bull zero target was used through the late 1980s (until adoption of the M16A2) to zero both the M14 (top "X" impact point) and M16A1 rifle and carbine (bottom "X") at 25 yards/Meters to give approximate 250-Meter battlesight zeroes.
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Posted: 1/24/2021 7:22:11 PM EDT
[#6]
Thanks guys, got it zeroed at 25m on the L aperture. Did the red dot at 25m as well.
 20210124_104247 by brandon hobock, on Flickr" />
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Posted: 1/25/2021 8:22:43 AM EDT
[#7]
One thing to remember about the standard 25 meter thing is its not always a "point of aim = point of impact" (POA=POI) thing. The old L Aperture trick (POA=POI) inspired me to use that technique for the M16A2 adjustable rear sight.
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Posted: 3/4/2021 6:54:16 PM EDT
[#8]
Quote HistoryQuoted: Thanks guys, got it zeroed at 25m on the L aperture. Did the red dot at 25m as well. https://live.staticflickr.com/65535/50870636187_3a7e46e425_k.jpg20210124_104247 by brandon hobock, on Flickr" target="_blank">https://live.staticflickr.com/65535/50870636187_3a7e46e425_k.jpg20210124_104247 by brandon hobock, on Flickr You might want to check your downrange 100M and 200M zero if that RDS is on @ 25 cause you are gonna be waaay high with that sight height. Also we zeroed @ 25 meters but POI was below POA and not to line of sight @ 25 |
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Posted: 3/4/2021 7:17:00 PM EDT
[#9]
But now for these style targets A2 and M4, the point of aim and point of impact are the same correct?
 Attached File |
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Posted: 3/4/2021 10:08:08 PM EDT
[#10]
Quote HistoryQuoted: You might want to check your downrange 100M and 200M zero if that RDS is on @ 25 cause you are gonna be waaay high with that sight height. Also we zeroed @ 25 meters but POI was below POA and not to line of sight @ 25 Big yes 9ish high at 100 yrds Im changing set up big time and i need to figure out a good distance to zero at. New setup is aimpoint 9000sc on top and will be in leupold split rings. |
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Posted: 3/4/2021 10:12:29 PM EDT
[#11]
 20210226_155508 by brandon hobock, on Flickr" /> 20210225_155225 by brandon hobock, on Flickr" />Once the red dot goes back on the cheek riser will as well. Going to leave the irons at 25m. |
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Posted: 3/5/2021 1:30:36 AM EDT
[#12]
Quote HistoryQuoted: Big yes 9ish high at 100 yrds Im changing set up big time and i need to figure out a good distance to zero at. New setup is aimpoint 9000sc on top and will be in leupold split rings. With a 3"ish sight height you will likely need to be about 1.5" to 1.9" low @ 25 to get in the ballpark @ 100. |
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