RDS: Co-Witness or Lower 1/3 Co-Witness... your thoughts?

[T2C]

With a lower 1/3, the red dot sits higher, correct? If so, would like that, as I find the iron BU sights seem low on the rifle to me and I have to scrunch my head lower on the butt stock than I would prefer with the irons. If the red dot sits higher, I wouldn't have to scrunch my head down so low on the stock.

The red dot appears centered in the glass with the iron sights out of the way when viewing the optic through the middle. When you lower your eyes and look through the irons sights, the red dot appears to be at the top of the front sight. If you are going to use the red dot as your primary aiming device, I think it is a better way to set up the carbine for most people.

[austinN4]

Another for lower 1/3 for all the reasons already stated.

[Auto-X Fil]

I use absolute with flip-up sights, and lower 1/3 with a fixed FSB and folding rear. For me and the low-profile stocks I use, the stock irons height is about perfect. But, I can make lower 1/3 work well, and it's worth it for me to get the dot up off the post.

[BrigandTwoFour]

If you have a fixed front, then I would prefer a lower 1/3. However, if you have folding front and rears, then it really depends on your preferences.

Most of my shooting these days falls into the category of "traditional marksmanship" rather than high speed dynamic stuff (10 rd limits and bullet buttons kinda put a damper on that). I find that a lower 1/3 works well for "head up" fast shooting, but the requisite raised head position gets mighty uncomfortable for me when shooting from positions such as prone for long periods of time. I found the same thing with my TR-24 and an ADM Recon-H mount a couple years ago.

In short, I like to keep my optics mounted at the same level as the iron sights, unless the iron sight will obstruct my sight picture through the optic.

[titsonritz]

I use 1/3 co-witness. My front iron in non-folding, my rear is folding. The video below does a good job of explaining the differences along with the pros and cons of each.

[DHart]

I use 1/3 co-witness. My front iron in non-folding, my rear is folding. The video below does a good job of explaining the differences along with the pros and cons of each.

titsonritz... thanks for the video link.

My BUIS are flip up. I'm thinking I would probably keep them flipped down and use just the RDS most of the time. Lower 1/3 co-Witness sounds like a good way to go.

[samuse]

I use folding front and rear with lower 1/3. Works great.

[Mysteryman]

Experience has slowly taught me that a greater clear field of view is better in practically any situation. Lower 1/3.

FOV with an RDS is the same regardless of wat is in front of your sighting eye, as long as you keep BOTH eyes open and focus on the target, not the dot. The FSB becomes a ghosted image that is blended with the unobstructed image coming from your non sighting eye.

MM

[themonk]

I prefer lower 1/3

[Leuthas]

FOV with an RDS is the same regardless of wat is in front of your sighting eye, as long as you keep BOTH eyes open and focus on the target, not the dot. The FSB becomes a ghosted image that is blended with the unobstructed image coming from your non sighting eye.

MM

I'm not referring to the listed field of view. Thanks though, I'm sure someone who's never looked through an RDS will find your comment helpful.