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Thread: Forearm Mounted Optics

  1. #1
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    Forearm Mounted Optics

    guys i searched the optics section and couldnt find anything. From what i understand, mounting optics on the forearm of your weapon is not looked upon with very high regard here.

    I have a TROY DI rail system on my ar and its ROCK SOLID, the thing is tight, doesent budge. so why would that make an ineffective platform to mount my eotech on? i put the eotech out there just to see how it would be and, it seems to make the gun point really really well.

    would it not be wise to mount the optic on my rail?

    -Ryan

  2. #2
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    Why would you want that much weight on the front of the gun?
    Be nice, be courteous, but have a plan to kill everyone you meet.

    "I would rather regret the decisions I make, than the one's I didn't."

  3. #3
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    its not that i want a bunch of weight on the front of the gun, it just makes the gun seem to point really well. i didnt notice any crazy shift in weight however

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    I'm not telling you what to do, but go out and shoot the rifle for a couple of hours with the optics over the front like that...your support hand is gonna be mighty sore.

    I had a 11.5" LMT w/ a Vltor CASV set up with an eotech 552 over the barrel, and IMHO, it was very front heavy. You want the rifle to balance. Try and manage a good mag change with a very front heavy gun...it isn't fun.
    Be nice, be courteous, but have a plan to kill everyone you meet.

    "I would rather regret the decisions I make, than the one's I didn't."

  5. #5
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    i understand, that makes sense. im going to order an American Defense eotech riser mount, i think that whats impeding my field of view right now is my BUIS. I have a regular FSB with a chopped carry handel for a BUIS, and as a result it cowitnesses completely with the eotech, and sort of makes things look cluttered. i think once the BUIS is in the bottom 1/3 that will clear things up a bit.

  6. #6
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    I'll let you make your own mind up about any potential weight/balance issues, but main problem with the arrangement you describe is that the drop-in, non-free-float handguards, despite locking up tightly, can and will shift with usage. Zeroing an optic on the handguards will eventually result in issues maintaining the zero.

    Now, the zero shift may be well within minute-of-enemy and might be acceptable if needed. Workable, but it's not ideal.

    A quality free-float HG will help with the zero issue, but I'll leave the meat of the discussion of why you do/don't want to place the optic that far forward to those with operational experience to back up their views...

    For what little it's worth, I think that while having the optic far forward "feels" pretty good initially, you'll find your field of view is less restricted with the optic closer to your eye. As an example...make a circle (okay sign) with your fingers, and look through it like you would your optic (focus on something else, like a person on TV)...hold it out front, then hold it close to your eye. Which way does your hand block more of your view?
    --Josh H.
    Zombies seek out and eat brains. Don't worry; you'll be safe if they attack.

  7. #7
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    LOKNLOD - Would your opinion change if the optic was mounted on an MRP or Vltor VIS?

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    Quote Originally Posted by Boomer10 View Post
    LOKNLOD - Would your opinion change if the optic was mounted on an MRP or Vltor VIS?
    My opinion on the utility of having the optic mounted really far forward, no. My confidence in the optic holding a zero, yes, but that's less opinion than technical fact. An MRP or VIS just can't shift around like a drop-in handguard.
    --Josh H.
    Zombies seek out and eat brains. Don't worry; you'll be safe if they attack.

  9. #9
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    I currently run my EoTech a little farther forward than most people, I put the viewing portion over where the delta ring would be on my MRP. I put it that far forward because I found it easier to see when I was shooting support side (left handed). Your logic is sound on why you should put it farther back. I'll probably end up playing around with it and moving the sight farther back but where I still feel comfortable shooting weak side.

  10. #10
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    Well it's definitely worth experimenting with to find your personal "sweet spot" but don't do anything based solely off of my recommendations I was hoping some of our SME's and pro's might jump in on this topic...

    I'll also say I haven't used an EOtech enough to know if that would change my opinion. The different (larger) reticle and hood shape vs. an Aimpoint might make it seem better/worse mounted closer/farther --- I just haven't spent enough time with one to formulate any thoughts on the EO.
    --Josh H.
    Zombies seek out and eat brains. Don't worry; you'll be safe if they attack.

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