Fogging RMR on FNP/X-45 Tactical with Suppressor installed

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Thread: Fogging RMR on FNP/X-45 Tactical with Suppressor installed

  1. #1
    Senior Member Rangerone's Avatar
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    Fogging RMR on FNP/X-45 Tactical with Suppressor installed

    For those of you that have the FNP/FNX Tactical with the RMR and Suppressor installed, do you get fogging from the gas exiting the chamber (port) when a suppressor is installed?

    I read that this can happen due to gases blowing back from using the suppressor. I am interested in getting an FNX-45 Tactical and putting on the RMR and when my suppressor comes in, running that attached on occasion. I'd hate to have to remove the RMR everytime I want to install the suppressor.

    Any actual experiences and feedback is much appreciated!


  2. #2
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    I dont have a suppressor, but I ran mine wet with a lot of oil, this would result in oil getting all over the optic, so I switched to using only lubricating it with Shooters Choice grease. You might also want to try applying MotoSolutions FogTech Anti-Fog spray to the optic, it works really great for my safety glasses.

    http://www.amazon.com/gp/product/B00...ls_o01_s00_i00
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    Senior Member capice2003's Avatar
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    @Rangerone... I run mine with the Burris Fastfire 2. Currently looking to get the latest and greatest with 3. There wasn't really any fog but, I did have it dry. I suppose if you were to put a heavy lube in like what Silencerco recommends as called wire pulling gel to fill that void and not be overly messy. In any case I do use the Otis cleaning kit with the optic bush to clean it if there were any debris in it.

    the one I was issued for sale....Has optics cleaner as well as bore,ap brush the full entente etc.
    http://www.ebay.com/itm/NEW-USMC-OTIS-Military-Issue-Combat-Weapon-Optics-Cleaning-System-Kit-5-56MM-/170916949976?pt=LH_DefaultDomain_0&hash=item27cb71 afd8
    And one that has the essential kit for the optic
    http://www.amazon.com/Otis-OTIS-OPTICS-CLEANING-KIT/dp/B006DXRI4O/ref=sr_1_14?s=sporting-goods&ie=UTF8&qid=1349202892&sr=1-14&keywords=optic+cleaning+kit
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    Only @ matter of time!

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    I know this might sound dumb or way too simple, but a small piece of plastic about the size of an m&m glued to the suppressor above the mounting point would probably stop the gasses from jetting directly back into the RMR.

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    Senior Member solvovir's Avatar
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    mine gets dirty, especially when running the can wet. I just wipe it with my shirt.
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    Quote Originally Posted by jathtech View Post
    I know this might sound dumb or way too simple, but a small piece of plastic about the size of an m&m glued to the suppressor above the mounting point would probably stop the gasses from jetting directly back into the RMR.
    The gas is not secaping from from the mounting point of the suppressor. If the suppressor is loose you should be more concerned about a baffle strike. Gas blows back through the chamber (increased back pressure) and is unavoidable. My RMR lense gets a dirty film on it (not fogging up but actual oily film) and is worse when shooting the suppressor wet and better when operating dry. One of the down sides of a suppressor but I would rather be able to shoot my 45tac without hearing pro so I live with it.

    MadDog
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    I only shoot my Tactical with the suppressor dry. I have had no fogging problems with the RMR.
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