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Posted: 5/3/2021 11:00:30 AM EDT
[#1]
On my flattops the center of the ACOG mounted RMR was four inches above the bore. Not sure what you are asking.
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Posted: 5/3/2021 11:41:09 AM EDT
[#2]
Quote HistoryQuoted: On my flattops the center of the ACOG mounted RMR was four inches above the bore. Not sure what you are asking. Thanks! that's useful info! A 2.26" Unity fast mount will typically sit an Aimpoint T2 approximately 3.6" height over bore. If the ACOG mounted RMR is sitting 4" HOB that's close to (or a bit higher) than a 2.26" mount which for my purpose would be useful. I want a red dot mounted higher for passive aiming with NODs. |
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Posted: 5/3/2021 3:34:53 PM EDT
[#3]
Quote HistoryQuoted: Thanks! that's useful info! A 2.26" Unity fast mount will typically sit an Aimpoint T2 approximately 3.6" height over bore. If the ACOG mounted RMR is sitting 4" HOB that's close to (or a bit higher) than a 2.26" mount which for my purpose would be useful. I want a red dot mounted higher for passive aiming with NODs. I'd ask Trijicon as it may be TAxx version dependent. |
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Posted: 5/3/2021 8:38:04 PM EDT
[#4]
Thanks OP, came here to post this exact question
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Posted: 5/4/2021 2:00:40 AM EDT
[#5]
RMR on a piggybacked ACOG mount is noticeably taller than any 2.26" dot/holographic setup. That being said, it doesn't feel too weird, but 2.26" feels better.
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Posted: 5/4/2021 7:41:34 AM EDT
[#6]
Here's a photo I just took: https://trailteams.weebly.com/
Not the most accurate measurement, but it looks like it's a bit under 3.25". I have a Unity mount and this is noticeably higher. I have a Midwest Industries QD mount, which should be the same height as the stock ACOG mount. The photo shows center of the ACOG a bit over 1.5" from top of rail (I think lower 1/3"), which is about right. |
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Posted: 5/4/2021 9:23:50 AM EDT
[#7]
Quote HistoryQuoted: Here's a photo I just took: https://trailteams.weebly.com/ Not the most accurate measurement, but it looks like it's a bit under 3.25". I have a Unity mount and this is noticeably higher. I have a Midwest Industries QD mount, which should be the same height as the stock ACOG mount. The photo shows center of the ACOG a bit over 1.5" from top of rail (I think lower 1/3"), which is about right. Thanks for this! Posted pic here: 
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Posted: 5/4/2021 9:09:05 PM EDT
[#8]
So 1 inch taller than a Unity mount
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Posted: 5/5/2021 11:08:52 PM EDT
[#9]
Quote HistoryQuoted: Thanks! that's useful info! A 2.26" Unity fast mount will typically sit an Aimpoint T2 approximately 3.6" height over bore. If the ACOG mounted RMR is sitting 4" HOB that's close to (or a bit higher) than a 2.26" mount which for my purpose would be useful. I want a red dot mounted higher for passive aiming with NODs. Quote HistoryQuoted: Quoted: On my flattops the center of the ACOG mounted RMR was four inches above the bore. Not sure what you are asking. Thanks! that's useful info! A 2.26" Unity fast mount will typically sit an Aimpoint T2 approximately 3.6" height over bore. If the ACOG mounted RMR is sitting 4" HOB that's close to (or a bit higher) than a 2.26" mount which for my purpose would be useful. I want a red dot mounted higher for passive aiming with NODs. @Greyswandir Piggyback RMR is my go-to setup for NV use. You really can’t go wrong with it. My Ta33 & RMR sit a bit higher than the typical Ta31/rmr due to my preferred Acog mount. If you haven’t bought a TA31 yet, it’s worth considering the eye relief issue. The TA31 needs to be moved closer to the shooters eye, which can bring your NVG in close contact with the rear of Acog. Another reason I prefer the Ta33s generous eye relief  Attached File |
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Posted: 5/7/2021 10:01:16 AM EDT
[#10]
Quote HistoryQuoted: @Greyswandir Piggyback RMR is my go-to setup for NV use. You really can’t go wrong with it. My Ta33 & RMR sit a bit higher than the typical Ta31/rmr due to my preferred Acog mount. If you haven’t bought a TA31 yet, it’s worth considering the eye relief issue. The TA31 needs to be moved closer to the shooters eye, which can bring your NVG in close contact with the rear of Acog. Another reason I prefer the Ta33s generous eye relief https://www.ar15.com/media/mediaFiles/496867/B4684999-6A90-4B79-9052-5B906315ABE4_jpe-1931393.JPG That's awesome! Thank you! just what I needed to know. I'm setting up a 13.7 with an acog/RMR soon (debating on Ta31 vs TA33). |
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Posted: 5/7/2021 1:33:19 PM EDT
[#11]
Quote HistoryQuoted: @Greyswandir Piggyback RMR is my go-to setup for NV use. You really can’t go wrong with it. My Ta33 & RMR sit a bit higher than the typical Ta31/rmr due to my preferred Acog mount. If you haven’t bought a TA31 yet, it’s worth considering the eye relief issue. The TA31 needs to be moved closer to the shooters eye, which can bring your NVG in close contact with the rear of Acog. Another reason I prefer the Ta33s generous eye relief https://www.ar15.com/media/mediaFiles/496867/B4684999-6A90-4B79-9052-5B906315ABE4_jpe-1931393.JPG I just got this same setup after using TA31s and TA11s in the past. The weight is on point but the RMR is pretty high and a 2.26” red dot feels much better so far IMO. Also, Eotechs and Aimpoints look better under NV compared to the RMR. My RMR on my handgun is fine but something about how close your nods are to a RMR piggy backed on an ACOG is less pleasing to my eyes compared to a T2/EXPS. And also, the TA33 FOV is like looking through a toilet paper roll lol, eye relief is great though. |
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Posted: 5/7/2021 5:41:13 PM EDT
[#12]
Anyone have the T31 combo with the crosshair reticle? Like it or hate it?
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Posted: 5/7/2021 6:01:57 PM EDT
[#13]
Quote HistoryQuoted: I just got this same setup after using TA31s and TA11s in the past. The weight is on point but the RMR is pretty high and a 2.26” red dot feels much better so far IMO. Also, Eotechs and Aimpoints look better under NV compared to the RMR. My RMR on my handgun is fine but something about how close your nods are to a RMR piggy backed on an ACOG is less pleasing to my eyes compared to a T2/EXPS. And also, the TA33 FOV is like looking through a toilet paper roll lol, eye relief is great though. Quote HistoryQuoted: Quoted: @Greyswandir Piggyback RMR is my go-to setup for NV use. You really can’t go wrong with it. My Ta33 & RMR sit a bit higher than the typical Ta31/rmr due to my preferred Acog mount. If you haven’t bought a TA31 yet, it’s worth considering the eye relief issue. The TA31 needs to be moved closer to the shooters eye, which can bring your NVG in close contact with the rear of Acog. Another reason I prefer the Ta33s generous eye relief https://www.ar15.com/media/mediaFiles/496867/B4684999-6A90-4B79-9052-5B906315ABE4_jpe-1931393.JPG I just got this same setup after using TA31s and TA11s in the past. The weight is on point but the RMR is pretty high and a 2.26” red dot feels much better so far IMO. Also, Eotechs and Aimpoints look better under NV compared to the RMR. My RMR on my handgun is fine but something about how close your nods are to a RMR piggy backed on an ACOG is less pleasing to my eyes compared to a T2/EXPS. And also, the TA33 FOV is like looking through a toilet paper roll lol, eye relief is great though. I totally agree. If a red dot is all you need, it is far superior to just use a T2 or Eotech mounted far forward on the receiver for NV use, because you really do get a lot of “window” in your view when looking through a piggy back RMR with NVGs. I use the rmr as just a backup to my LAM basically |
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