First Responder/MIL/Veteran Discount

PMM IDRS (Independent Drop-In Rear Sight)


Earn up to 55 Points.

Product Details

**These will be stocking soon**

Front Sight Height Math:

In order to co-witness your front sight to the IDRS, you will need to some math. You will need calipers for this.

Subtract the IDRS height installed in the optic (See chart in photos or below) from your depth of cut (Z). Call this figure O.

Next subtract your front sight height (X) and rear sight height (Y). Call this figure H.

H minus 0 will give you the suppressor height sight that you will need in order to co-witness your front sight.


IDRS Height Installed in Optic:

RMR IDRS- 0.450″

RMR-CC IDRS- 0.450″

SRO IDRS- 0.475″

RMR-HD IDRS- 0.475″

DPP IDRS- 0.581″ (Adjustable. Min height)


See Below For Compatible Optics.

RMR & RMR-cc:

  • Trijicon RM06
  • Trijicon RM07
  • Trijicon RM09
  • Trijicon RMCC06
  • Trijicon RMCC07


  • Trijicon SRO1
  • Trijicon SRO2
  • Trijicon SRO3


  • Trijicon RMHD1
  • Trijicon RMHD2

Leupold DPP:

  • Leupold Delta Point Pro


Not Compatible:

  • Trijicon Dual-Illuminated Reflex Sight
  • Trijicon RCR
  • Any other optics not listed above


Additional information


Trijicon RMR/ RMRcc, Trijicon SRO, Trijicon RMR-HD, Leupold DPP

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