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8/16/2009 11:11:06 AM EDT
Hi,

I plan on running the standard FSB on mine with a flat top and EoTech 512. I just pulled my ar out and i thought that i may need a riser so i can see over the FSB. Will this true or am i just paranoid?
8/16/2009 11:12:52 AM EDT
[#1]
I asked about the same question in the optics forum. People said when you start shooting the FSB fades out of sight
8/16/2009 11:14:37 AM EDT
[#2]
The Eotech 512 without a riser is 100% co-witness, with riser, depending on the riser could be lower 1/3 or lower 1/4.  I have the 512 on my 6920 and the FSB did not bother me at all.
8/16/2009 11:15:24 AM EDT
[#3]
If you get a riser, you will be able to position the circle above the front site post, effectively looking over the front sight.  Without a riser, the front site post will align right in the middle of the circle.
8/16/2009 11:34:40 AM EDT
[#4]
Get a lo-pro gas block...NOW.

You know you'll be moving to it eventually.
8/16/2009 11:38:34 AM EDT
[#5]
Quoted:
The Eotech 512 without a riser is 100% co-witness, with riser, depending on the riser could be lower 1/3 or lower 1/4.  I have the 512 on my 6920 and the FSB did not bother me at all.


This

You don't need a riser. You'll absolute co-witness in this case.

If you get a riser, the you will lower 1/3 co-witness. If that's what you want––all up to you.
8/16/2009 12:04:46 PM EDT
[#6]
Quoted:
I asked about the same question in the optics forum. People said when you start shooting the FSB fades out of sight


This. I run my EoTech 512 without a riser and my rear sights flipped up. When you start shooting your eye focuses on the red dot and the target beyond it.

It cowitness perfectly too so that if my red dot goes down I'm still in the fight without having to adjust anything.
8/16/2009 2:48:09 PM EDT
[#7]
Quoted:
Hi,

I plan on running the standard FSB on mine with a flat top and EoTech 512. I just pulled my ar out and i thought that i may need a riser so i can see over the FSB. Will this true or am i just paranoid?


Nope

I run a 551F Eotech on a Rack Grade LMT M4

The FSB never gets in my way of shooting

Main raeson I like EOTECH is because a mount ISNT needed
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