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Trijicon MRO® FAQ's

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The front lens on my MRO® is installed at an angle. Is this correct?

Yes this is correct. The front, or objective lens is installed at a precise angle in order to reflect the red dot back to the user’s eye. This angled objective lens is common to all reflex‐style optics. It may be more noticeable on the MRO than some other optics due to the increased size of the lens.

Why is my MRO® dot not lighting up?

Please refer to your MRO manual or online video for proper battery installation. Incorrect battery orientation
or damage to the battery contacts can prevent the MRO from functioning properly.

Ensure that a battery is installed correctly and that the battery cap is tightened (to provide proper contacts) for operation. To turn on, rotate the illumination knob so that one of the numbered positions is facing toward you as you would look through the optic. Note that the night-vision settings (“n” and “N”) will not be visible without night vision goggles, and the lowest day settings (“1” and “2”) may be difficult to see in bright conditions. If you still can't see the dot, please contact Customer Service at 1-800-338-0563 or complete and submit the form on our Contact Us page.

How should I clean the lenses of my Trijicon MRO® sight?

We suggest that you used compressed air to remove any large debris to avoid scratching the lens. Once clear of debris, use an ordinary glass cleaner or fresh water. A mild plastic polish will remove minor swirl type scratching. It is important to avoid the use of any strong solvents like lacquer thinner or bore cleaner near the lens as they will damage the lens coatings. Use of a motorized polishing device on the lens will also cause damage to the unit's lenses.

Is the Trijicon MRO® waterproof?

All MRO's are rated to pressures equivalent depths of 100 feet (30 meters).

What is the MOA of the MRO® reticle?

The MRO reticle is a 2.0 MOA red dot.

What is the MRO® battery life?

The MRO battery should last for 5 years of continual use at setting “3” (5 of 8). When left on at the brightest setting (“6”), the battery should last around 25 days. Note that extended use in extreme temperatures – either cold or hot – may reduce the battery life considerably.

Is the MRO® as durable as (competitor optics)?

The Trijicon MRO has the strongest housing of any optic in its class because it is forged from 7075-T6 aluminum. Furthermore, the Trijicon MRO has been tested and validated to the same MIL-STD-810G environmental and durability requirements as our ACOG®.  Please reference the MRO specification page on our website for more details.

Why does the MRO® have a slightly bluish tint?

The slight bluish tint you may sometimes notice when looking through the Trijicon MRO is a result of the optical coatings that are required to provide a clear, crisp dot and maximum battery life. This phenomenon is present in all reflex-style optics to varying degrees, and it does not affect usability or performance of the optic.

Does the MRO® work with magnifiers?

The Trijicon MRO will work with magnifiers in the same manner as other reflex-style optics. Trijicon offers three different mounting height options, and a magnifier should be selected/configured such that the optical axis of both the MRO and the magnifier are co-aligned for best performance.

Why do I see a red glint when looking through the MRO®?

Like every reflex-style optic, the Trijicon MRO will exhibit some glint from the optical lens coatings when the users eye is not directly behind the optic and the dot is not centered in the field-of-view (off-axis viewing). While the amount of glint will vary depending on the orientation of the optic relative to external light sources, the MRO exhibits less of this effect than competitive optics. This phenomenon does not affect usability or performance of the optic, even in non-standard shooting positions.

Why do I see a red ring around the MRO® objective lens when at the brightest setting?

When at its brightest setting ("6"), the Trijicon MRO will often exhibit a red ring around the outer edges of the objective lens. The MRO exhibits less of this effect than competitive optics when at their brightest settings.

Note that this effect can also be made less noticeable by placing the optic at a greater distance from the operator's eye, and by ensuring the operator's eye is directly behind the optic. Situationaly, setting the MRO to "6" should rarely be required to achieve an appropriately bright reticle dot.

Does the MRO® have any "Fish-Eye" or distortion?

The lenses of the Trijicon MRO do not produce optical distortion commonly referred to as "fish-eye." Any perceived distortion by the end user is either more accurately described as image shift or could be due to the slight magnification of the MRO (see respective FAQ's).

Why does some of the image seem shifted when looking through the MRO®?

Like competitive optics, the image viewed through the Trijicon MRO becomes shifted somewhat at the edges of the field of view. This shift is a result of the design needing to have a tilted and curved objective lens to reflect the reticle dot back to the operator's eye. The image shift at the edges of the MRO's viewable area will be more noticeable than on optics with smaller objective lenses simply because of the larger viewable area. This was a trade-off in the design of the MRO in order to allow operators to see more area through the optic and thereby get faster hits on target from non-standard shooting positions.

This image shift does not affect the usability or performance of the optic when properly zeroed because the reticle dot and target will still be correctly aligned.

Is the MRO® magnified?

The Trijicon MRO has a very slight magnification of 1.05x, which is within the range of competitive reflex-style sights. This slight magnification allows the MRO to have an optimally-focused target scene and a crisp, clear reticle dot. The slight magnification does not affect the usability or performance of the optic.

Does the MRO® have any parallax?

Like all reflex-style optics, the Trijicon MRO is parallax-free when the dot and target are reasonably well centered in the optic's field-of-view, but when the reticle and target are substantially off-axis, there will be some parallax. The off-axis parallax performance of the MRO meets or exceeds that of other reflex sights of similar size.

What is the torque spec for the MRO® mount screws?

The torque spec for the (4) #4-48 screws supplied with your mount should be torqued to 12 in/lbs. Any more than 12 in/lbs and you risk stripping the threads out of the MRO housing. Please refer to your Mount Instructions for the MRO booklet for complete mounting instructions.


Trijicon MRO® Patrol FAQ's

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The front lens of my Trijicon MRO® Patrol is installed at an angle, is this correct?

Yes this is correct. The front, or objective lens, is installed at a precise angle in order to reflect the red dot back to the user’s eye. This angled objective lens is common to all reflex‐style optics. It may be more noticeable on the Trijicon MRO Patrol than some other optics due to the increased size of the lens.

What is the difference between the MRO® and the MRO® Patrol?

The Trijicon MRO Patrol offers the same proven features of the industry leading Trijicon MRO® (Miniature Rifle Optic) while incorporating the most requested accessories, providing a complete out of the box solution.

The Trijicon MRO Patrol features Tenebraex lens covers at both the Ocular and Objective lens, an ARD Kill Flash to protect from unwanted detection while eliminating glare, and a newly designed 7075-T6 aluminum quick release mount that is available in either full height or 1/3rd iron sight co-witness.

Will the Trijicon MRO® Patrol replace the Trijicon MRO®?

Trijicon will continue to offer both the MRO and the MRO Patrol.

Does the Trijicon MRO® Patrol use tritium/fiber optics?

The Trijicon MRO Patrol does not require the use of tritium/fiber optics, the reticle is LED illuminated with a CR2032 lithium battery.

Which platforms is compatible with the Trijicon MRO® Patrol?

The Trijicon MRO Patrol is a versatile and durable rifle optic which is optimized for rifles, carbines and shotguns for a variety of applications including hunting, military, law enforcement, competitive shooting and personal protection.

Is the Trijicon MRO® Patrol made in the USA?

The Trijicon MRO Patrol is designed, engineered, machined and assembled at Trijicon’s facility in Wixom, Michigan, USA. The Tenebraex flip caps are sourced from, and manufactured in Canada.

What is a reflex/dot sight?

A reflex sight, also commonly referred to as a red dot sight, is an illuminated optical gunsight in which the aiming point becomes visible to the shooter by being projected onto a partially reflective objective lens. Reflex sights can be illuminated using LED battery power or with tritium/fiber optics and are ideal for fast target acquisition in a variety of environments.

Trijicon offers an extensive line of top of the line reflex sight options including the MRO (Miniature Rifle Optic), MRO Patrol, RMR (Ruggedized Miniature Reflex), SRS (Sealed Reflex Sight), Reflex and MGRS (Machine Gun Reflex Sight). To learn more about all Trijicon reflex sights click here.

Does the Trijicon MRO® Patrol work with magnifiers?

The Trijicon MRO Patrol will work with magnifiers in the same manner as other reflex-style optics. Trijicon offers three different mounting height options, and a magnifier should be selected/configured such that the optical axis of both the Trijicon MRO Patrol and the magnifier are co-aligned for best performance.

Is the Trijicon MRO® Patrol night vision compatible?

Yes the Trijicon MRO Patrol offers two night vision settings in addition to the 6 day light settings.

What type of battery does the Trijicon MRO® Patrol use?

The Trijicon MRO Patrol is powered by an included CR2032 LED battery with an estimated 5 year life at continuous use at day setting 3 (setting 5 of 8) at 70 degrees Fahrenheit.

What is the Trijicon MRO® Patrol battery life?

The Trijicon MRO Patrol battery should last for 5 years of continual use at setting “3” (5 of 8). When left on at the brightest setting (“6”), the battery should last around 25 days. Note that extended use in extreme temperatures – either cold or hot – may reduce the battery life considerably.

Is the Trijicon MRO® Patrol waterproof?

All Trijicon MRO product lines are rated to pressures equivalent depths of 100 feet (30 meters).

Will the Trijicon MRO® Patrol fit on the original Trijicon MRO® mounts?

Yes, the Trijicon MRO® Patrol will fit the original MRO Mounts by Trijicon and will also fit most MRO Mounts on the market today.

What are the dimensions of the Trijicon MRO® Patrol?

The Trijicon MRO Patrol is 4.1 in. x 1.8 in. x 2.0 in. (104mm x 46mm x 51mm) excluding the mount with the caps closed.

Is the Trijicon MRO® Patrol bigger than the Trijicon MRO®?

The Trijicon MRO Patrol is slightly larger than the Trijicon MRO. The Trijicon MRO Patrol dimensions are 4.1 in x 1.8 x 2.0 (104mm x 46mm x 51mm) with the caps closed. The Trijicon MRO® measures 2.6 in. x 1.7 in. x 2.0 in. (66mm x 43mm x 51mm) without the mount.

What is the weight of the Trijicon MRO® Patrol?

The Trijicon MRO Patrol weighs 5.1 oz. / 144g with battery installed, without the mount.

Does the Trijicon MRO® Patrol weigh more than the Trijicon MRO®?

The Trijicon MRO Patrol weighs slightly more, at 5.1 oz. / 144g with battery installed, excluding the mount. The first generation Trijicon MRO weighs 4.1 oz (116g) with battery installed, excluding the mount.

What is the warranty of the Trijicon MRO® Patrol?

Trijicon warrants that products manufactured by Trijicon will be free from defects in material and workmanship for the lifetime of the original owner. Trijicon will repair or replace (at our option) the registered product. This warranty does not apply to defects caused by anything which is deemed abnormal, abusive, or improper including any fault resulting from an accident or improper service. This warranty specifically applies to the optical systems and metal structure of the product and does not apply to the illumination system.

What is the warranty of the Trijicon MRO® Patrol?

Trijicon warrants that products manufactured by Trijicon will be free from defects in material and workmanship for the lifetime of the original owner. Trijicon will repair or replace (at our option) the registered product. This warranty does not apply to defects caused by anything which is deemed abnormal, abusive, or improper including any fault resulting from an accident or improper service. This warranty specifically applies to the optical systems and metal structure of the product and does not apply to the illumination system.

Trijicon MRO Patrol electronics are warranted to be free of defects in material and workmanship during normal use for a period of five (5) years from date of original manufacture.

Do I need tools to make adjustments?

The Trijicon MRO Patrol features ½ MOA sub flush adjusters designed to prevent accidental adjustment without caps. No special tools are required to make adjustments.

Why is my Trijicon MRO® Patrol dot not lighting up?

Please refer to your Trijicon MRO Patrol annual or online video for proper battery installation. Incorrect battery orientation or damage to the battery contacts can prevent the Trijicon MRO Patrol from functioning properly.

Ensure that a battery is installed correctly and that the battery cap is tightened (to provide proper contacts) for operation. To turn on, rotate the illumination knob so that one of the numbered positions is facing toward you as you would look through the optic. Note that the night-vision settings (“n” and “N”) will not be visible without night vision goggles, and the lowest day settings (“1” and “2”) may be difficult to see in bright conditions. If you still can't see the dot, please contact Customer Service at 1-800-338-0563 or complete and submit the form on our Contact Us page.

How should I clean the lenses of my Trijicon MRO® Patrol sight?

We suggest that you used compressed air to remove any large debris to avoid scratching the lens. Once clear of debris, use an ordinary glass cleaner or fresh water. A mild plastic polish will remove minor swirl type scratching. It is important to avoid the use of any strong solvents like lacquer thinner or bore cleaner near the lens as they will damage the lens coatings. Use of a motorized polishing device on the lens will also cause damage to the unit’s lenses.

Why does the Trijicon MRO® Patrol have a slightly bluish tint?

The slight bluish tint you may sometimes notice when looking through the Trijicon MRO Patrol is a result of the optical coatings that are required to provide a clear, crisp dot and maximum battery life. This phenomenon is present in all reflex-style optics to varying degrees, and it does not affect usability or performance of the optic.

Why do I see a red glint when looking through the Trijicon MRO® Patrol?

Like every reflex-style optic, the Trijicon MRO Patrol will exhibit some glint from the optical lens coatings when the user's eye is not directly behind the optic and the dot is not centered in the field-of-view (off-axis viewing). While the amount of glint will vary depending on the orientation of the optic relative to external light sources, the Trijicon MRO Patrol exhibits less of this effect than competitive optics. This phenomenon does not affect usability or performance of the optic, even in non-standard shooting positions.

Why do I see a red ring around the Trijicon MRO® Patrol objective lens when at the brightest setting?

When at its brightest setting ("6"), the Trijicon MRO Patrol will often exhibit a red ring around the outer edges of the objective lens. The Trijicon MRO Patrol exhibits less of this effect than competitive optics when at their brightest settings.

Note that this effect can also be made less noticeable by placing the optic at a greater distance from the operator's eye, and by ensuring the operator's eye is directly behind the optic. Setting the Trijicon MRO Patrol to "6" should rarely be required to achieve an appropriately bright reticle dot.

 
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