The Trijicon MRO: initial thoughts and observations **Range report on post 19**

Master-G

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May 13 update: Range report added on post 19


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I was looking for a new sight for my FS2000 I picked up last fall—I’d been using a Holosun 403C I’d borrowed off my Vector but needed a permanent solution. I had intended to use my Meprolight M5 sight when I bought the FS2k but that sits too high for me—the FN has a raised rail that makes sights that work well on ARs or (especially) Tavors sit too high for me. I’d found that the Holosun sat perfectly—just a bit higher than an Aimpoint Micro, which sits a bit too low.

I’d seen a few posts about the MRO (it’s a 2 MOA sight), and I’d had good luck before with a few ACOGs and RMRs (now down to just one ACOG) so I thought I’d give it a try. The problems that the SRS had, plus a few online reports of parallax issues with the MRO gave me a bit of concern, but I thought I’d try it anyway.

The sight comes in Trijicon’s usual hard-shell case and includes the hex key, battery, manual, lens cloth, plus the traditional sticker. Lens covers or a scope coat would have been a nice addition

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The first thing I noticed was that it was smaller than pictures made it look—it’s not that much bigger than an Aimpoint Micro—and at 4.1 oz it’s only 0.8 oz heavier. Here is it compared to my Micro and Holosun sights.

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The objective lens is significantly bigger, though.

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Mine came with the Trijicon factory low mount—nothing fancy…just a couple of hex screws. You can also see in the picture below the windage adjustment. Unlike Aimpoints there are no caps over the adjustments.

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Here’s the elevation adjustment, as well as the big brightness knob. I like how easy it is to adjust, although I’d never had a problem with the Micro’s side-mounted knob. You can also see the slot for the battery cover on top of the brightness knob.

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Interestingly, there are two “off” positions. One between the 2 and 3, and one below the 1. I guess the theory being that if you’re just using it in daylight use can turn it off after the 3 and have it ready again with fewer clicks.

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Looking through the sight it does exhibit a bit of a “lens-y” effect that RMRs do, with maybe a slight bit of magnification. The effect didn’t bother me on the RMRs, but it is a bit more noticeable than with the Micros. There’s a slight bluish-green tint too, also similar to the Micros. One of the things I liked about the Meprolight M5 sight was the perfectly clear and distortion-free. The MRO exhibits, to my eyes, the same amount of astigmatism distortion that the Micro does—the RMR was better in this respect, but it also had a larger 3.25 MOA dot which could account for the difference.

Of course, the big claim to fame for the MRO is the larger field of view. Here it is compared to my Micro and Holosun (the greenish tint of all three sights is more prevalent in these pictures than it is with the naked eye).

MRO
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Micro
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Holosun
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The MRO does indeed have a larger field of view, but in doing a few “test sightings” with the FS2000 compared to the Micro on my Diablo it does not seem “night and day” different. I'm satisfied so far—I’ll have to see how it works at the range.
 
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Nice, thanks for the review.

There is a lengthy review of these on ar15.com forums. A lot guys are complaining about MRO's with low serial #'s 0 - 30k. It's in regards to optical shift and a large red glare slash from top right to bottom left. (as seen in your last picture?)
Thanks for the link. It's actually the Holosun in the last picture. I like them ok for the price but they do have an issue with reflections with light behind you.

I've not noticed any unusual reflections with the MRO.

Neat. Does the mount you have cowitness with irons? Looks a tad low to me. Nice review though!
There's a higher mount intended for ARs--this one is the perfect height for my FS2000.
 
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Please post a pic on your FS2000, I was thinking about one of these for mine :)
Here's how it looks on the rifle—I'm quite happy with the fit, although I do prefer a low optic on these. I couldn't get a good picture of the mounted dot tonight. I'll get it tomorrow.

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I picked up one of these recently, but with the co-witness mount. I have it mounted on my tavor, and it seems pretty sweet so far. I don't have many rounds on it though, so time will tell. It has excellent fit and finish. I also enjoy the fact that it has a off position right next to setting 3. Works great.

Master-G - sweet FS2000 you have there. If you ever want to sell it let me know.

Ben
 
I've used the Micro for several years and have just recently switched to the MRO. So far I feel the MRO is superior. The way I explain it is Trijicon studied the Micro and just improved on it. Both excellent sights.

Rich
 
Here's a picture I took this evening of the sight mounted on the FS2000 upper. I could remove the front sights but I'm used to them being in the sight picture.

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I wonder since you all the aimpoints and the MRO can we see the bottom of it to see if the 4 strews for mount match?
That's a good question—it would be nice to use the plethora of Micro mounts available. Unfortunately, though, it doesn't work out:

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The MRO bolt pattern is wider and longer (that's a Holosun mount but its bolt pattern is the same as the Micro's.
 
too bad


some one should do a coversion kit

thank you for you quick respose. I am sure i was not the only one asking this question.
 
Uh... there are plenty of MRO mounts available. There's nothing wrong with the factory mount other than the fact that it's not QD.

You can get the 2 Larue MRO mounts from Rampart.
 
Yes that is right...
The whole point! a rail cover the would fit on top that would match the base of the aimpoint pro... Trijicon should had done what votes did and keep the same base mount model of aimpoint...
 
Yes that is right...
The whole point! a rail cover the would fit on top that would match the base of the aimpoint pro... Trijicon should had done what votes did and keep the same base mount model of aimpoint...

Ok you go call Bill Gieselle and tell them you want that mount for your MRO. lol.
 
I finally had a chance to take the FS2000 out to the range today—it was a pleasant day with temperatures about 15°C with light winds but unfortunately the black flies were out in full force. I also brought my PWS Mk107 Diablo out for comparison—it has a 2 MOA Aimpoint H1 on it. Ammunition for all shooting was 55 grain Remington FMJ from their “Freedom Bucket.”

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The results were quite pleasing—I tried standing shooting at 50m and seated from a rest at 100m. The dot was very easy to pick up at brightness setting “4”—there are two brighter settings but given the brightness of the mid-day sun it’d have to be a very bright environment indeed to require it…probably something like snow or sand and bright sun.

The dot was quickly picked up…I’m not sure it’s much faster than the Micro but at least as good. There is some “lensing” in the view through the sight but it was not perceptible in use—there’s more than with the Aimpoint. The RMRs I owned had the same effect—it does not bother me. The sight did have a more noticeably bluish-green tint than the Aimpoint.

There were absolutely no spurious reflections in the sight. I even tried inducing them by standing with the sun directly behind me and aiming the rifle at the ground to maximize the amount if light behind the sight—there was nothing. I tried the same with the Aimpoint and there was a bit of a red reflection in the top left of the window—no objectionable by any means but still noticeable.

The sight adjustments were easily and accurately made—the cap-less adjustment dials are certainly convenient.

Here’s how both sight look at 100m:

Aimpoint Micro
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Trijicon MRO
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You can see that the Micro has a bit of lens-effect—have a look at the line where the target numbers are. The MRO has a bit more—this can be seen at the top of the backstop. As mentioned earlier, though, this was not noticed in use. The MRO exhibited less distortion at the edges than the RMRs I owned. You can also see the wide field of view with the MRO—it goes from target positions 6 to 10, while the Micro goes from targets 7 to 9. The 2 MOA dots in both sights looked identical to my eyes.

Here’s the result of the first 10 round group—it’s just a bit more than 3”, which is just a bit bigger than how well I usually do with the FS2000. I haven’t had the FS2000 out since December so I don’t feel that the sight was the issue—it was easy to hold on the sighting mark.

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I’m quite happy with the sight—it worked well, and didn’t exhibit any of the negative issues I’d read.


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