I’ve read everything I could find here about the MRO, but still have questions. I recently bought an LMT mlok MRP for my patrol rifle and want to get an optic. I’ve messed with the EOtech and it was ok, but I didn’t trust it much. I’ve pretty much narrowed it down to an MRO or Aimpoint Comp m5. A lot of people have complained about the parallax on the MRO. I looked through one and the dot moved all over the place with the slightest head movement. Does this actually hinder real use? Has anyone noticed it during real use? Is the Aimpoint product better than Trijicons offering? 

Original Post

This is one of the advantages of the RDS.  The bullet goes where the red dot is when the weapon is fired assuming it's zeroed and you have a proper trigger pull.  

Aimpoint has been in business since 1975.  Trijicon since 1981.  That they are both in business says a lot about their products.  

Have you done a 'net search for articles comparing the two?

Perhaps you can better define your application.








Trajan Aurelius



When violence is the local language, be fluent.


"He who is not angry, whereas he has cause to be, sins.  For unreasonable patience is the hotbed of many vices, it fosters negligence, and incites not only the wicked but even the good to do wrong."  Saint Thomas Aquinas, "Summa Theologiae/Second Part of the Second Part/Question 158", c. 1274

The one MRO I have does seem to exhibit those issues if I don’t get my eye where it should be, like in certain asymmetric firing positions.  It has not been as extreme as others have noted, however, and this is an early MRO.

Having said that, the Comp M5 is (to me) a superior optic in every way.  Clarity, mounting options, battery type, you name it.  Especially if you intend to ever use a magnifier.  

I’ve got a Comp M5 on my go-to gun, a KAC CQB Mod2.  The MRO is on a spare beater upper in the back of the safe, if that’s any indicator as to how I rank them.

Joined: 9/1/2004          Location: The Big Bend.

Thanks for the replies. My primary application will be an optic for my patrol rifle. It will lie in my trunk most of the time until I have to use it or train with it.  I’ve done searches on m4carbine and ar15 but it seems like most commenting haven’t actually used them in a capacity other than static range. Or the ones who have have said they returned their MRO or sold it because they didn’t like the view. There wasn’t much information on how the parallax affected their shooting. The last thing I want is an inferior optic that will throw a shot because I wasn’t able to get the perfect cheek weld in a stressful event. Maybe I’m overthinking it. 

I’ve got an MRO on my patrol rifle. I’ll agree that it does have a slight “fish eye” look if you sit behind it and stare at it. However while actually shooting with it, I never notice it. I’ve trained with it on my own for about a year, and run it through an FBI carbine school. Not once did the MRO hold me back. 

Location: Mississippi

Are you:

- married with young kids? = PRO

- married with older kids? = MRO

- married without kids? = T-2

- single with no kids you’re aware of? = Comp M5

Bump yourself up one category level if your wife works.

 All kidding aside, the MRO is a good duty-grade optic that will fill your need for an unmagnified RDS nicely. 


What is left when honor is lost?

It doesn’t to me, but I’ve been using Micros ever since Larue made a mount for a carbine. 

I would not feel under-equipped with an MRO, I just like my Aimpoints.  The newer MROs I’ve taken a quick look through seem to have fixed any of those early reports which might have been overblown anyway.

Many people do finds larger “tubes” (or rectangles) easier to use for passive nighttime use with head-mounted NVGs, but that’s such a narrow use case that I personally don’t give it much consideration.

Joined: 9/1/2004          Location: The Big Bend.

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