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NCGlockin
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I'll get the ball rolling. Typically co-witness is determined by the riser height. You can actually purchase one optic and have it co-witness or 1/3 co-witness. It depends on which you want.
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I would rather have it and not need it than to need it and not have it.
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I would rather have it and not need it than to need it and not have it.
here is a great option that fits exactly what you requested. I just purchased one, gots to order another... For the money, I think it is one of the best in it's class, comes with the correct height mount as well, everything you need in one package...
Amazon.com : Vortex StrikeFire 2 Red / Green Dot Sight Scope/Cantilever Mount and FREE Vortex Hat : Sports & Outdoors@@AMEPARAM@@http://ecx.images-amazon.com/images/I/51WFDFRRLUL.@@AMEPARAM@@51WFDFRRLUL
Amazon.com : Vortex StrikeFire 2 Red / Green Dot Sight Scope/Cantilever Mount and FREE Vortex Hat : Sports & Outdoors@@AMEPARAM@@http://ecx.images-amazon.com/images/I/51WFDFRRLUL.@@AMEPARAM@@51WFDFRRLUL
gdnagle
US Veteran
You also didn't say how much you want to spend, they can go from cheap to expensive. You will hear buy once cry once. You'll want a co-witness mount you will hear lots of folk like the Primary Arms Micro Dot less then $100 plus mount.
Like DFM914 said go shoot it and make sure it doesn't have any bugs, plus iron sights is what you will use when you go to shoot and your batteries are dead so you need to make sure you're proficient with them. I have a Vortex SPARC Red Dot and am happy with it. It's a old model now as they have a SPARC II Red Dot now.
And a warm
from “wild and wonderful “ West Virginia at least that’s what they tell us.
Like DFM914 said go shoot it and make sure it doesn't have any bugs, plus iron sights is what you will use when you go to shoot and your batteries are dead so you need to make sure you're proficient with them. I have a Vortex SPARC Red Dot and am happy with it. It's a old model now as they have a SPARC II Red Dot now.
And a warm
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When you co-witness a red dot with sights, you are always using the sights anyways.... get the red dot, you'll love it.
mkbruce
Member
Bushnell TRS-25 high-rise - $80 at amazon. Lower 1/3 co-witness in an excellent and inexpensive sight.
ChattanoogaPhil
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1x red dot
Budget-
Primary Arms MicroDot
Bushnell TRS-25
Battle worthy-
Aimpoint H1 and T1
EOTech
Aimpoint also makes a less expensive unit-PRO.
Budget-
Primary Arms MicroDot
Bushnell TRS-25
Battle worthy-
Aimpoint H1 and T1
EOTech
Aimpoint also makes a less expensive unit-PRO.
Rastoff
US Veteran
I second the suggestion from Phil. While I'm a huge fan of Vortex magnified scopes, their red dots leave much to be desired. They are OK, but have parallax issues. I've had two of them and won't be buying another. The Primary Arms seem to have licked the parallax issues and I will be going with one of those soon.
For the record: I have used Aimpoint, EOTech and Vortex optics, extensively. I've also had a host of "el cheepo" scopes and red dots. The only solid advice in this area is, if you want to be sure to get a good optic, save your pennies and buy the good one first. Otherwise you may spend more on several cheaper optics.
For the record: I have used Aimpoint, EOTech and Vortex optics, extensively. I've also had a host of "el cheepo" scopes and red dots. The only solid advice in this area is, if you want to be sure to get a good optic, save your pennies and buy the good one first. Otherwise you may spend more on several cheaper optics.
cyphertext
US Veteran
No you aren't... If you do the lower 1/3rd co-witness, you look over the sights. If you have fold downs, the point is moot.
The only time I am looking through my sites with the red dot is when I am using my fixed sight .22lr AR with absolute co-witness... and even then I am not "using the sights", as I am keeping both eyes open, while looking through the peep sight while focusing on the target down range.
Am I reading this wrong..... or maybe you misunderstood what I was trying to say...
Red Dot Sights and Co-Witnessing: What’s it all about? (VIDEO)
2/06/13 | by Jeffrey Denning 57 3758
Are you thinking about getting a new red dot optic or just got one? Worried that the one you have your heart set on makes your iron sights nearly impossible to use? Then I highly suggest you check out the facts about co-witnessing.
What is a Co-Witness?
People employed in the tactical fields know it’s a good idea to pair Red dot, reflex and halo sights with iron sites. This combination is most often employed on the AR family of rifles and when both sights are lined up together, it what is known as co-witnessing.
The term co-witness refers the double verification of target that occurs when you line up your iron sights with the red dot, reflex or halo sight. In a proper co-witness sight picture, the dot should rest on the tip of the front sight on iron sights. Assuming the iron sights have been zeroed, the dot or tip of the front sight post should hit it’s intended target (six-o’clock hold sighting for the iron sights and all other ballistic calculations notwithstanding).
here is a link to the article...
Red Dot Sights and Co-Witnessing: What's it all about? (Video) - Guns.com
Red Dot Sights and Co-Witnessing: What’s it all about? (VIDEO)
2/06/13 | by Jeffrey Denning 57 3758
Are you thinking about getting a new red dot optic or just got one? Worried that the one you have your heart set on makes your iron sights nearly impossible to use? Then I highly suggest you check out the facts about co-witnessing.
What is a Co-Witness?
People employed in the tactical fields know it’s a good idea to pair Red dot, reflex and halo sights with iron sites. This combination is most often employed on the AR family of rifles and when both sights are lined up together, it what is known as co-witnessing.
The term co-witness refers the double verification of target that occurs when you line up your iron sights with the red dot, reflex or halo sight. In a proper co-witness sight picture, the dot should rest on the tip of the front sight on iron sights. Assuming the iron sights have been zeroed, the dot or tip of the front sight post should hit it’s intended target (six-o’clock hold sighting for the iron sights and all other ballistic calculations notwithstanding).
here is a link to the article...
Red Dot Sights and Co-Witnessing: What's it all about? (Video) - Guns.com
As for parallax, I can't say I've used a PA yet.. but have used and own just about most of the higher end dots... I don't see any parallax issues here at all with the Vortex RD.. I don't see myself shooting beyond 100yds with this set up, in fact, I rarely shoot beyond 50yds with my red dots.... but parallax is not really an issue here.. for me. On checking reviews, I could find no issues..
cyphertext
US Veteran
Maybe a little misunderstanding on both ends... The article and video are basically saying to zero your irons and red dot for the same distance, but not use them at the same time. He suggests using the irons to get a mechanical zero for the red dot, and then folding the rear sight down in the video.
I will say the video is bad though, because his drawing on the board represents absolute co-witness, but he talks about lower 1/3rd co-witness at one point...
At any rate, you do not use the sights and red dot together at the same time. Even years ago with short term battery life and all, your sights may have been up and in line with your eye, but your focus was down range on the target, not on the dot or the front sight post.
ChattanoogaPhil
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Parallax -- Here's a vid I made of the Primary Arms MicroDot. The dot sits above the green utility box. Notice the red dot barely budges even with extreme camera movement which I had to take the optic off the rifle in order to get that much movement.
That's one of the reasons the 1x red dot is ideal for fast target acquisition in comparison to irons and magnified optics that require the shooter to be exactly aligned for aiming.
https://www.youtube.com/watch?v=xvLmPbkbsd0
That's one of the reasons the 1x red dot is ideal for fast target acquisition in comparison to irons and magnified optics that require the shooter to be exactly aligned for aiming.
https://www.youtube.com/watch?v=xvLmPbkbsd0
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I have a MBUS2 rear flip up and A2 front sight. I bought a vortex strike fire 2 and am confused by all the different ideas out there as well. I have a 1/3 lower co-wintess mount. I plan on using either the irons or the Red dot.
Do I:
a) Sight them in separately? (I am going to use them separately)
b)Sight in the irons then align the red dot to the top of the front post while looking through all three? (Even though I am going to use them separately, this is how people on the web are describing how to do it)
c)sight them in separately then check that they are co-witnessed?
If I co-witness them, does the red dot have to be on the front post when aiming with the rear sights flipped down? Or do I just put the red dot on the target and shoot. It seems to me people are tying the two together and they should remain separate. After all, the point of having BUIS is to be used when the red dot fails. What is the point of having a red dot if you are just going to use it with the BUIS? I ask because I don't get it and I open to opinions to figure out what I like best. Thanks
Do I:
a) Sight them in separately? (I am going to use them separately)
b)Sight in the irons then align the red dot to the top of the front post while looking through all three? (Even though I am going to use them separately, this is how people on the web are describing how to do it)
c)sight them in separately then check that they are co-witnessed?
If I co-witness them, does the red dot have to be on the front post when aiming with the rear sights flipped down? Or do I just put the red dot on the target and shoot. It seems to me people are tying the two together and they should remain separate. After all, the point of having BUIS is to be used when the red dot fails. What is the point of having a red dot if you are just going to use it with the BUIS? I ask because I don't get it and I open to opinions to figure out what I like best. Thanks
ChattanoogaPhil
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I exersize option b.
If I co-witness them, does the red dot have to be on the front post when aiming with the rear sights flipped down?
No. The front sight is likely to be wandering around in relation to the dot. One of the advantages of a 1x red dot is that is does not require the shooter to be exactly aligned as with irons and magnified scopes. See above vid.
Don't get hung up on co-witness terminology. If you can use your irons while looking through your optic, you are co-witnessing. Lower 1/3rd vs absolute co-witness defines the height of the irons in relation to the optic's glass. Lower 1/3rd means that the irons will be in the lower 1/3rd of the glass, absolute means that the irons will be in the middle of the glass and both can be zeroed as such, or not.
These things are often fodder for overthink. They need not be. Enjoy your new optic.
If I co-witness them, does the red dot have to be on the front post when aiming with the rear sights flipped down?
No. The front sight is likely to be wandering around in relation to the dot. One of the advantages of a 1x red dot is that is does not require the shooter to be exactly aligned as with irons and magnified scopes. See above vid.
Don't get hung up on co-witness terminology. If you can use your irons while looking through your optic, you are co-witnessing. Lower 1/3rd vs absolute co-witness defines the height of the irons in relation to the optic's glass. Lower 1/3rd means that the irons will be in the lower 1/3rd of the glass, absolute means that the irons will be in the middle of the glass and both can be zeroed as such, or not.
These things are often fodder for overthink. They need not be. Enjoy your new optic.
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cyphertext
US Veteran
I second option B... Sight irons first. Once the irons are sighted in, then put the dot on top of the front sight when looking through all three. But I then go one step further and put the rear sight down and confirm zero by shooting with just the dot. You may find you have to move it a click or two either way to get it just where you want it.
