DDMK18 optic help

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Bobbyv8

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Hey guys just ordered my first AR a Daniel Defense mk18, I want to use the DD front and rear sights, just wondering what optic would be best running them..I either going Eotech XPS or a Aimpoint Micro t-1

just wondering if anyone has a similar set up, and can share their thoughts.

Also is co-witnessing sights an issue when acquiring the red dot quickly?? Should I just avoid fixed sights and get some folding sights?????

Any help would be appreciated
 
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I think it's more of a personal/what's works best for your but I took a shot with my DD mk18 and mounted a larue LT751 with a Aimpoint t1, co-witness with magpul mbus. I'm not complaining and the setup works for me just fine.
 
I prefer flip ups, or at least flip up rear sight and fixed front sight. Eotech or Aimpoint, you can't go wrong with either. I use an Eotech with Troy flipup sights and 1/3rd co-witness.
 
Ok i think I figured it out..I might run the DD fixed sights with an Aimpoint T1 mounted on a DD offset mount.

thanks for the info guys, feel free to share your opinions on this set up
 
I have two optics I swap between on my DDmk18 depending on distances I expect to shoot. I went with the Viper PST 1-4x for mid to longer-mid ranges and a Bushnell TRS-25 for 0-50 metres. Worked well for me. I figured I'd try the TRS-25 and see if it was good enough before dropping the coin on an eotech. No complaints about either option.
 
I prefer flip-up sights because I don't like my sight picture busy with non-essential stuff other than my target and reticle/red dot.

Co-witnessing your sights doesn't mean you look through your optics at the same time as you align your iron sights to the target. What's the point other than to slow you down with target acquisition? Co-witnessing allows you to remove and replace your optics and sight them in using the iron sights or replace your iron sights and sight them in using the optics without having to fire a shot. Then you fine tune when you have the opportunity to do so. You might not be bang on but you'll be pretty close.

I think some folks are under the impression that co-witnessing is using both optics and BUIS (they're called backup iron sights for a reason) simultaneously.

Gurus, correct me if I'm wrong 'cause most times I probably am... :p
 
Well I'll "chime in" and I suppose some won't like what I have to say. The Aimpoint Micro is pretty dam reliable, for most range use you could get away without a set of irons. If I did it again I'd just run the Aimpoint, in a different "theatre" they (irons) certainly have there place.
 
I have a exps2 mounted on my mk18. I really like it. I had a magpul bui for the front and a matech iron on the rear. I removed them though because the exps is 1/3 co witness and I'm honestly not a huge fan of having to change my cheek weld, and since I'm only shooting at the range and carry spare cr123's in the butt stock I don't worry about it much.

If I switch my optics back to my comp ml3 in adm mount I might reinstall the buis.
 
Trinimon said:
I prefer flip-up sights because I don't like my sight picture busy with non-essential stuff other than my target and reticle/red dot.

Co-witnessing your sights doesn't mean you look through your optics at the same time as you align your iron sights to the target. What's the point other than to slow you down with target acquisition? Co-witnessing allows you to remove and replace your optics and sight them in using the iron sights or replace your iron sights and sight them in using the optics without having to fire a shot. Then you fine tune when you have the opportunity to do so. You might not be bang on but you'll be pretty close.

I think some folks are under the impression that co-witnessing is using both optics and BUIS (they're called backup iron sights for a reason) simultaneously.

Gurus, correct me if I'm wrong 'cause most times I probably am... :p[/QUOTE

so I wouldn't have to constantly focus on aligning my irons with the red dot ?
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Co-witnessing your sights doesn't mean you look through your optics at the same time as you align your iron sights to the target. What's the point other than to slow you down with target acquisition? Co-witnessing allows you to remove and replace your optics and sight them in using the iron sights or replace your iron sights and sight them in using the optics without having to fire a shot. Then you fine tune when you have the opportunity to do so. You might not be bang on but you'll be pretty close.

I think some folks are under the impression that co-witnessing is using both optics and BUIS (they're called backup iron sights for a reason) simultaneously.

Gurus, correct me if I'm wrong 'cause most times I probably am... :p

so I wouldn't have to constantly focus on aligning my irons with the red dot ?
Click to expand...

Co-witnessing is basically the ability to use your iron sights through your optic, whether it is a scope, a red dot, or a holographic sight. Usually, a lower 1/3rd co-witness is used, which allows the use of the irons through the lower 3rd of the optic being used. This is mostly the case on rifles that use a fixed front sight, or fixed front and rear sights, so that they do not totally interfere with reticle/target acquisition. Less clutter is the big picture here.

An absolute co-witness is when the rifle's iron sights line up in the center of the optic being used. This set-up type can be used more on a rifle which uses flip-up BUIS, so when they are folded and not deployed, the view through the optic is clear and unobstructed. When deployed, the optic's red dot, or reticle center point should line up perfectly at the tip of the front sight post.

I find that for myself, and absolute co-witness allows me to get a bit lower into the rifle...it's not much, but because my line of sight is closer to the bore, I feel a bit more "compact" when doing CQB style 3-gun courses. But that's just me...
 
I had to sell my CORE15 because I couldn't ignore the front sight from my nine years in the military pre-ELCAN. This training scar was over twenty years old, and still hampered things.

As a remedy my replacement was a flat-top with flip-up BUIS. I tried Aimpoint, but greatly prefer EoTech. For me the donut of death is considerably faster during CQB competitions, YMMV. Yes, the AA batteries ONLY last a year, but I replace them at the start of competition season and they're GTG ... Plus AA batteries are easy to source.

As an aside, I was thankful I run both my ARs with absolute co-witness... I was running my 10.5 one competition and the RDS came loose mid-day. We're not allowed to switch rifles or re-zero during the day, but I popped up my BUIS, adjusted the RDS to again co-witness, and I was back in the game... Finished third on the day despite writing off the stage my RDS fell off... A little Loctite once I got home fixed things for good...
 
If you're looking at irons while using a rd dot, you're not using the red dot. When you use a red dot, you look at the target with both eyes open and focused on the target, then superimpose the dot on the target and fire, the purpose of the dot is speed, the irons are only a (rarely used) back up in case the dot fails. Loc tite and witness mark with paint ALL screws, nuts and fasteners that can possibly loosen.
 
Bobbyv8 said:
Thanks for the info Strider007 and the PM, and after all this I'm still unsure on what I'm going to do.

Haha
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HAHA!!! Yup...I hear you, man! That's the beauty of it. So many choices and opinions, it's almost like you're taking a step back! Ah, don't worry too much about it...you'll figure it out. The way I see it, you're gonna like one more than the other. The only way to figure that out is to start with one, and see how it works for you. That's the beauty of it!

Good luck...
 
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