PMM Independent Drop-In Rear Sight (IDRS) for Trijicon RMR


The Independent Drop-In Rear Sight (IDRS) from Parker Mountain Machine is the most low-profile and least obtrusive rear iron sight on the market. Small enough to be there when you need it, and barely noticeable when you don’t, the IDRS mounts directly to your Trijicon RMR.

This rear sight requires the following front sight heights:

Direct Milled Slides at industry standard .125″ deep requires a .350″ tall front sight.  We recommend Dawson Precision

GLOCK MOS with industry standard .100″ thick optic plates require a .390″ tall front sight.  We recommend Dawson Precision


(4 customer reviews)

In stock

4 reviews for PMM Independent Drop-In Rear Sight (IDRS) for Trijicon RMR

  1. csweismann (verified owner)

    This is absolute brilliance!
    C&H direct milled the slide of my trusty 1911, which meant no rear sight.
    The installed this amazing rear sight into my RMRcc, and I installed a Dawson front, to replace the factory fiber.

    I have a great sight picture if my trijicon were ever to fail.

    Highly recommended!

  2. bubo9 (verified owner)

    Genius idea and well done! I wouldn’t choose any other way after trying this set up. Thanks for the great product and fast shipping!

  3. Michael Estle (verified owner)

    Purchased for my PMM custom build P320 with RMR cut slide. Quality appears good and it fit perfectly and secured to the Trijicon RMR optic. I have not tested the irons at the range yet as I just received and installed items. I was recommended a 330 height on front sight for my setup which I ordered from Dawson to ensure I have proper alignment. Currently still waiting on those front sights. But I will be testing front sights that came with my PMM with these rear irons before installing new front sights replacement. Installing was very easy just an Allen wrench and adding the two screws through the drain holes of the trijicon. At first I was disappointed PMM didn’t provide a cut for Rear sights. I actually like this setup better than my other handguns with suppressor sights. Thank you chows for making this option available!!!!

  4. kylar96 (verified owner)

    Perfect fit and finish. Whar a great idea. Hoping they make one for the sro. I would post a pic if i could.

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