View Full Version : I need a favor
For those of you with some sort of red dot optic on your rifle, I need a measurement. I need to know the distance from the top of the picatinny rail to the center of the lens on the optic.
What I am trying to do is find an optic/mount set up that will give me absolute cowitness when mounted on top of my VLTOR CASV-M handguard. I know Eotechs are out of the question. I am hoping an Aimpoint in a low mount of some sort might work.
I need the distance from the top of the rail to the center of the optic to be about 15/16" to maybe 1". If your set up gives you absolute or lower 1/3 cowitness on a standard flat top upper it is going to be way too tall for my needs.
Thank you all in advance. [Beer]
islandermyk
06-10-2012, 19:53
Hope this helps... it's an AIMPOINT T1 on my Krinkov measured from the top of the rail
http://i418.photobucket.com/albums/pp261/brutaltlr/IMAG0594.jpg
Definitely helps, Mike. [Awesom]
Looks like that micro would actually be a little short. Looks like about 3/4" or so to the center of the lens. Maybe I could find a mount for it that raised it about 1/4".
That's exactly the kind of measurement I am looking for. Thanks for taking the time to help me out. [Beer]
islandermyk
06-10-2012, 20:02
Definitely helps, Mike. [Awesom]
Looks like that micro would actually be a little short. Looks like about 3/4" or so to the center of the lens. Maybe I could find a mount for it that raised it about 1/4".
That's exactly the kind of measurement I am looking for. Thanks for taking the time to help me out. [Beer]
No problem at all.. glad I could lend a hand[Beer]
See if these help Ray. If you want, you are welcome to stop by and measure it for yourself. Just give me a call or PM and let me know when.
Chuck
Thanks, Chuck. [Awesom]
That one is definitely too high for my application. I wonder what type of "low" mount they make for it? Might have to do some research.
Definitely helps, Mike. [Awesom]
Looks like that micro would actually be a little short. Looks like about 3/4" or so to the center of the lens. Maybe I could find a mount for it that raised it about 1/4".
That's exactly the kind of measurement I am looking for. Thanks for taking the time to help me out. [Beer]
If you use a micro or clone that has a removable base I have these little mounts with spacers that came off with my VORTEX sparc. They are not quick release though, but the smallest one might give you that height you need combined with a micro or clone. I am not going to use them.
Your welcome to them. Well maybe a beer or something? [Beer]
http://i394.photobucket.com/albums/pp29/SkullyandRoxy/firearms/WP_002130.jpg
Better one of the smaller mount showing height;
http://i394.photobucket.com/albums/pp29/SkullyandRoxy/firearms/WP_002134.jpg
Thanks, Skully. I might take you up on those. I have a feeling I am going to have to buy an optic of some sort and then play around with different mounts until I find one that works.
Thanks, Skully. I might take you up on those. I have a feeling I am going to have to buy an optic of some sort and then play around with different mounts until I find one that works.
Just let me know, they are not going anywhere. I found with my Trijicon reflex on top of the VLTOR it it is not quite 1/3 co witness and that cool triangle dot blocks out the front sight and can barely see through the back so I did a ARMS QR.
If you use the MICRO it is too low like the photo from Islandermyk above you just need a hair height added. The smallest mount is about 1/16th and with the spacer would raise about 1/4.
If you don't want to spend a fortune on a red dot pick up a PA Micro clone, they have removable bases and use all the MICRO dot mounts.
GoldFinger
06-10-2012, 21:18
Hey Ray,
Not sure if this helps but I have a Aimpoint ML2 and I get perfect cowitness with my iron site (acutally the site I bought from you). It's 1.5" to center.
http://i758.photobucket.com/albums/xx228/ggold/IMG_1986.jpg
Thanks for the help. [Awesom]
As you can see in the photo below, my handguard actually mounts to the top of my receiver. My optic will be mounted on top of that. Anything that is about 1.5" from the top of a standard receiver will be too high to cowitness on my rifle. I think I might have to pick up an Aimpoint of some sort and find a mount that will make it cowitness.
http://i102.photobucket.com/albums/m98/rjs1970/utf-8BSU1HLTIwMTIwNjAxLTAwNDAxLmpwZw.jpg
StagLefty
06-11-2012, 07:28
I know Eotechs are out of the question. I am hoping an Aimpoint in a low mount of some sort might work.
My Eotech sitting on the rail with no mount gives me a perfect co-witness.
I guess your's must be different ? [Coffee]
Look into the Vortex Sparc. Vortex makes some VERY solid optics and these so far are performing every bit as well as my EOTech & Aimpoint optics and the only question mark will be long-term durability. With the existing track record of Vortex optics I'm not too worried about it at all. Anyway, they run $199 retail (can be found for $180 shipped online) and remind me a LOT of an Aimpoint Micro but with a smaller 2MOA dot (Aimpoint now has a 2MOA option but it will cost you an arm along in addition to the base price on a Micro of your leg) and they key to this discussion is that it comes with a riser, a low pro mount and several spacers so that you can adjust it to just about any level in between. Here's a photo of one of my AR's as well as one of my AK's and both are wearing mounts that come with the optic itself (along with a little 2x magnifier that you can screw on) and not used are a couple spacers of various thicknesses.
https://lh4.googleusercontent.com/-bPEhLmuWZiA/T8eVRktqAEI/AAAAAAAAC-8/4TZDOCyeW4E/s1024/IMG_3846.JPG
An Aimpoint ML2 in a QRP mount w/ the spacer is 1.5 inches off the top rail on an AR. It provides absolute co-witness on most AR's. Try the same thing without the spacer.
Look into the Vortex Sparc. Vortex makes some VERY solid optics and these so far are performing every bit as well as my EOTech & Aimpoint optics and the only question mark will be long-term durability. With the existing track record of Vortex optics I'm not too worried about it at all.
I was offering my bases for my SPARC I am not going to use but why I did not think of that, he is shopping for a red dot to go with it. Might as well get a VORTEX SPARC and he has some different sized mounts to play with. JBOB still has them with coupon for $179.99 with free shipping (http://www.joeboboutfitters.com/SPARC_Red_Dot_p/v-sprc.htm). Check out the review of it on AR15 the guy put it through hell. (http://www.ar15.com/forums/t_2_277/187104_Vortex_SPARC_Review.html)
My Eotech sitting on the rail with no mount gives me a perfect co-witness.
I guess your's must be different ? [Coffee]
Yep. Not mounting it to the top of the receiver. See my post directly above your post. [Beer]
StagLefty
06-11-2012, 18:35
Yep. Not mounting it to the top of the receiver. See my post directly above your post. [Beer]
Yup-I saw that. I think you added the pic after I posted. Whole different set up.[Beer]
Yup-I saw that. I think you added the pic after I posted. Whole different set up.[Beer]
Nah... you were probably just craving some Friskies cat food so bad it had your vision all blurry. [ROFL1]
Lowest found,when my CASV-M was still here,,lent out a year ago :(
3rd one down 68L,,For a Micro dot,,they only have a 1/3 lower cowitness aka SOCOM
http://www.americandefensemanufacturing.com/view/product/1/
Lowest found,when my CASV-M was still here,,lent out a year ago :(
3rd one down 68L,,For a Micro dot,,they only have a 1/3 lower cowitness aka SOCOM
http://www.americandefensemanufacturing.com/view/product/1/
Thanks. [Awesom]
I saw they offer a mount for the Aimpoint H1/T1 but it is a lower 1/3 cowitness. I really want a true cowitness if I can get it.
http://www.americandefensemanufacturing.com/view/product/46/
Lower 1/3,on the T1/H1,,could call them see what else they got.
Not alot of us CASV users around.
I'll find something. Heck, an Aimpoint M2 will mount in just about any type of 30mm scope ring. I just need to find a low enough ring to put the center of the optic at the height I need.
68L 1.10" center from rail,,thats .3" lower,,gives as close to absolute cowitness
as could find.
http://www.americandefensemanufacturing.com/view/product/1/
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