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Q&A for Meprolight Flip-Up Front & Rear Tritium Sight Set w/2 Rear Dots — 12 Questions & 13 Answers

Name Meprolight Flip-Up Front & Rear Tritium Sight Set w/2 Rear Dots (2.9)
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Q
Bubba, guest, from CO, United States, asked on May 20, 2019

Will these sights co-witness with the Mepro M-21?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on October 08, 2019

Yes, these sights will co-witness with the M21 on a flat top.

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Q
Honey badger, guest, from FL, United States, asked on May 07, 2022

When they are laying flat on the rail, how long is that? And will they work with the at3 red dot and magnifier?

Manufacturer Answer
A
Answered by Meprolight USA, Manufacturer from PA, United States, on May 25, 2022

The length will be 2.05". I'm not sure if they will work for that magnifier but the height from the top edge of the rail to the middle of the rear sight aperture is 1.481"

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Q
Lakelizard, member, from NH, United States, asked on May 02, 2022

The desert tan set is shown with 4 dots, that is the set of sights I would like to order.

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on May 18, 2022

The Meprolight Flip-Up Front & Rear Tritium Sight Set w/4 Rear Dots model can be found at the link below.
https://www.opticsplanet.com/mako-frbsm4d-frt-rear-sght-4-dots-blk.html?_iv_code=MR-RS3-FRBSM4D-403400

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Q
Lakelizard, member, from NH, United States, asked on April 27, 2022

does the rear sight rotate for different sight pictures?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on May 09, 2022

The Meprolight Flip-Up Front & Rear Tritium Sight Set rear sight does not rotate for a different sight picture.

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Q
Sam, guest, from WA, United States, asked on February 27, 2022

Will these absolute co-witness with a Vortex Viper PST II

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on March 21, 2022

That entirely depends on what mount you use for your PST Gen II. The Meprolight Flip-Up Front & Rear Tritium Sight Set are at an absolute co-witness height for the AR15 platform. So if you have a mount that brings your Viper to the 1.4" centerline, it will be an absolute co-witness.

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Q
Fred, member, from FL, United States, asked on February 22, 2021

Will these 1/3 co-witness on a Holosun HS510C w/ their 1/3 co-witness plate?

Manufacturer Answer
A
Answered by Meprolight, Manufacturer from PA, United States, on July 14, 2021

We do not have that optic to test.

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Q
Mark Scoble, member, from ME, United States, asked on February 05, 2021

Why does the photo show 4 tritium dots on the rear sights, but the description says only two dots are in the design?

Manufacturer Answer
A
Answered by Meprolight, Manufacturer from PA, United States, on July 07, 2021

2 dot and 4 dot versions are available.

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Q
Larry Spillman, member, from NM, United States, asked on October 06, 2020

Are these spring loaded flip up? Thanks..

Manufacturer Answer
A
Answered by Meprolight, Manufacturer from PA, United States, on November 25, 2020

They are not.

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Q
Vince Clorthaw, member, from CT, United States, asked on July 17, 2020

Is the front sight post and rear aperture made out of metal or plastic?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on December 08, 2020

The post and rear aperture wheel are metal.

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Q
Vince Clorthaw, member, from CT, United States, asked on July 17, 2020

Will these co witness with the Mepro Micrords with the picatinny rail mount?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on December 08, 2020

Not with the Micro RDS. These are AR height sights and are meant to co-witness at approximately a 1.5 inch height.

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Last updated 2025-11-12 UTC.