Vortex reflex, Burris ff, insight mrds

[No Name Precision]

Anyone know if he any of the vortex reflex sight, Burris ff series, or insight mrds have the exact same dimensions as the trijicon rmr's. Down to the housing of the lense angle, length, width and mounting screws?

[champu]

Venom dimensions (see specs tab):

http://www.vortexoptics.com/product/venom-red-dot-3-moa-dot

Burris FF3 dimensions (see pg 3):

http://www.burrisoptics.com/sites/default/files/content/products/manuals/fastfire3userguiderev10.2.15.pdf

Trijicon RMR dimensions (see pg 3):

https://www.trijicon.com/resources/downloads/2016_Trijicon_RMR.pdf

I know the FF3 and the Venom have the same mounting pattern as I just did the research (e-mailing vendors and such) and ordered a Venom and a FF3 mounting plate to go on one of my rifles. I don't know about the RMR mounting interface.

[Jesse Tischauser]

I haven't measured but I'd guess the RMR has the largest footprint of all red dots. It definitely looks bigger.