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Old 12-24-2012, 23:49   #1
detroit9mm
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Red Dot question

I just got my first AR and I have a question regarding the use of a red dot. It is currently set up with the regular front sight and a magpul flip up rear. I am considering going with a Bushnell TRS25 red dot sight. Gun is just for fun so don't want to spend a bundle on a high end optic. My question is will I need a riser to use the red dot? I would like to be ale to use the irons thru the optic if needed. Thanks!
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Old 12-24-2012, 23:58   #2
Glock21Owner
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You will only need a riser if you want the sights to match up with, or "co-witness" the red dot. The co-witnessed red dot will give you a reference as to how your sights are aligned.
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Old 12-25-2012, 00:06   #3
detroit9mm
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I'm not concerned that they co-witness. My only thought was that without riser the dot may be below the top of the front sight and the post would obscure the target since the front isn't a flip up. Maybe that isn't the case at all and that's why I decided to ask the question.
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Old 12-25-2012, 00:19   #4
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Yes you will need a riser. Otherwise the dot is going to be way down the back of the front sight base.

You will need a riser like this

http://www.midwayusa.com/product/992...-flattop-matte
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Old 12-25-2012, 00:20   #5
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yes, you will need a riser. oops, mvician beat me to it.

Last edited by majette; 12-25-2012 at 00:20..
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Old 12-25-2012, 00:40   #6
detroit9mm
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Ok, is the 1" riser the best choice for whatim looking for? I'd still like to be able to use the irons thru the optics if needed.
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Old 12-25-2012, 01:03   #7
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Yes, it is the same riser that Primary Arms sells with their fixed base micro dot.
It will give you lower 1/3 cowitness.

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Old 12-25-2012, 01:07   #8
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Thank you sir, the exact info I was looking for!
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Old 12-25-2012, 02:56   #9
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Great thread! I'm in same boat as OP and picked this up at Cabelas for $30 and haven't been able to get out to shoot since.

http://www.cabelas.com/product/Cente...h-All+Products
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Last edited by pnutcar; 12-25-2012 at 02:57..
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