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What is the proper height of an optic mount for an AR10?

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January 07, 2024, 01:36 PM
old rugged cross
What is the proper height of an optic mount for an AR10?
I have an Aimpoint ML2 red dot and also am thinking of using a 1-6x24 scope. Both seem too low for a comfortable and natural check weld. What gives? Do I need an extra high mount or rings?



"Practice like you want to play in the game"
January 07, 2024, 02:43 PM
YooperSigs
Do you have a front sight base you need to clear?


End of Earth: 2 Miles
Upper Peninsula: 4 Miles
January 07, 2024, 02:48 PM
old rugged cross
I do, but currently I can see it but it is low in the sight pix. So not currently an issue. But When I look through the scope or site I only can see the top 1/3 of the circle.



"Practice like you want to play in the game"
January 07, 2024, 04:45 PM
powermad
The proper sized mount is the one that works for you.
Lower mounts don't work well for me. Same issue, I wind up looking through the top portion instead of the middle of the tube unless I kink my neck way over, which is uncomfortable and not natural.

I tried a YHM riser first to see if that worked better before buying another mount to try out.
https://yhm.net/accessories/rails-mounts/scope-riser/
January 07, 2024, 09:47 PM
IndianaBoy
quote:
Originally posted by powermad:
The proper sized mount is the one that works for you.


This. Depends on the optic, the stock, your own body mechanics and how the gun fits you.
January 07, 2024, 10:51 PM
twpayne75


I use a 1.5" across the board on all AR10/15. This was the standard for many years, but several higher heights are being made now. Just ordered a Leupold base to replace this Aero Precision, but I still went with 1.5" height.

Best advice is try some of the others and see what works for you. I've never wanted any higher.
January 07, 2024, 11:02 PM
old rugged cross
Mine is set up very similar to yours as best I can tell and it is too low.

What I have have is a UTG AIR31850D and I do not know what height it is exactly. But I need something a bit higher for sure.

I think I will talk with my Gunsmith as he has lots of rings and can probably get me set up.



"Practice like you want to play in the game"
January 08, 2024, 10:22 AM
David W
I like 1.93 height for LPVOs and red dots, I like my head up slightly more. There was a little learning curve going from 1/3 to the 1.93 but I feel it’s so much better for me.






David W.

Rather fail with honor than succeed by fraud. -Sophocles
January 08, 2024, 11:12 AM
old rugged cross
what mount is that on your lpvo?



"Practice like you want to play in the game"
January 08, 2024, 11:46 AM
IndianaBoy
quote:
Originally posted by twpayne75:


I use a 1.5" across the board on all AR10/15. This was the standard for many years, but several higher heights are being made now. Just ordered a Leupold base to replace this Aero Precision, but I still went with 1.5" height.

Best advice is try some of the others and see what works for you. I've never wanted any higher.



1.5 mounts are ideal for me.
January 08, 2024, 12:22 PM
sigfreund
It may not matter to the accuracy being sought with most AR type rifles, but for most precise results I have become a firm believer in minimum downward stock weld (cheek) pressure. After accepting that advice from precision shooters, my own accuracy results have become much more consistent.

With that in mind so that it’s not necessary to jam one’s cheek down onto the stock, my magnifying optics are mounted on ARs so that the center of the scope is 1.5 inch above the top of the Picatinny rail base. That allows comfortable and yet positive contact between my cheekbone and the stock but without any unnatural downward pressure.

I’ve seen at least one YouTuber’s advice that nonmagnifying sights be mounted a bit higher so the head can be kept in a relaxed fully upright position. That’s how I have my Aimpoint sights mounted, with their centers 1.8 inch above the top of the Pic rail. That can result in more of a jawbone stock weld that may not be best for precision shooting, but yet can be fine for how many (most?) ARs are used—and which is true of me.




6.0/94.0

“I can’t give you brains, but I can give you a diploma.”
— The Wizard of Oz
January 08, 2024, 02:04 PM
powermad
My groups tightened up quite a bit going to taller mounts and being able to get a consistent cheekweld. Both red dot and scope.
My right earpro doesn't get moved out of the way now either, which used to drive me nutz.
I'd see other people using muffs and not have that issue and wasn't until I got taller mounts that I realized that I'm stretched out a bit more than they are.
January 08, 2024, 02:23 PM
powermad
I had a Luth stock for awhile but don't need a cheek riser and it's kinda meh anyway.
So I just used an A2 stock.

1.93" Midwest Industries QD mount.


I have a Romeo5 XDR on it at the moment and use an ADM QD mount. The T2 low mount.
That gives a 1.6" centerline.
I used the 1/3 cowitness spacer that came with the R5 and it now sits 1.8" above the rail.
January 08, 2024, 07:26 PM
David W
quote:
Originally posted by old rugged cross:
what mount is that on your lpvo?


Badger Ordnance


David W.

Rather fail with honor than succeed by fraud. -Sophocles
January 09, 2024, 10:16 PM
old rugged cross
Picked up a 1/2"- pictinny riser and coupled with the 1-1/2"_ mount I think I am about perfect. Smile

Thanks guys.



"Practice like you want to play in the game"
January 10, 2024, 12:44 PM
twpayne75
quote:
Originally posted by old rugged cross:
Picked up a 1/2"- pictinny riser and coupled with the 1-1/2"_ mount I think I am about perfect. Smile

Thanks guys.


I've considered picking up a riser just to see what all the fuss is about.

No way I would spend $200+ for a new mount just to try one.
January 10, 2024, 02:11 PM
old rugged cross
If you are unhappy with your sight pix I would definitely do it. For me at least, it allows for a natural check weld and excellent sight pix through the scope now.



"Practice like you want to play in the game"