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buxman66
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Posted: 2/5/2010 9:09:49 PM
[Last Edit: 2/5/2010 9:11:34 PM by buxman66]
just got a eotech 517 for my birthday couple weeks ago,thought i could mount on my colt a2 carry handle (arms a2 plus mount) but unfortunately does not co-witness at all w/ the standard a2 style front and rear sights. so,.......have changed the plan up a little (much to my wife's chagrin) to buy a complete new flat top upper in 5.56 w/the standard a2 front sight post and all the other options that i liked on my colt 6530 upper. okay,so the question is: will i have a lower 1/3rd. co-witness w/my raised base 517 and using the matech rear buis? i let a co-worker take my eotech 517 home w/ him to try it on his flat top upper and he came back into work the next day and drew me a picture of what he had seen thru my eotech.....and it sure sounds as though it's a lower 1/3rd. i have yet to buy my new upper as i'm still price shopping for exactly what i want.thanks for any/all replies.
Copperjacket
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Posted: 2/5/2010 9:30:59 PM
The 517 (or any raised base EO, for that matter) will always be a lower 1/3 co-witness with a standard height base or flattop.....Not a fan
buxman66
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Posted: 2/5/2010 9:37:36 PM
well hell,i'm just glad i'm hopefully gonna get a lower 1/3......i bought it w/the intention of being somewhat hampered to access the controls on the other models,so i opted for the side activated buttons. woulda,coulda,shoulda......
buxman66
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Posted: 2/5/2010 9:39:48 PM
btw,thanks for the info. if you dont mind me asking,what is your reason for your particular opinion?
yeos
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Posted: 2/5/2010 10:00:20 PM
I actually like the lower 1/3 with an EOTech. I have an XPS2-0 which is not set up like your 517. I had to buy a YHM riser for it. It's all personal preference.
emsemt911
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Posted: 2/5/2010 10:07:05 PM
I have my eotech with the co witness. The only reason I have it set up for it is because I have folding sights. I
could not have done it any other way. I would have problems looking at the dot and then the sights.
I would have had to do the lower cowit if I had non folding sights
aztrooper
Jack Booted Thug
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Posted: 2/5/2010 11:06:52 PM
My 511 and the 512 have true cowitness on the Colt 6920 flat top. I can't imagine it would be different, but I have been wrong before.
This is my Boomstick!!!
buxman66
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Posted: 2/6/2010 1:20:28 AM
thing is the 511 and the 512 dont have the added 7mm riser on them as does the 516,517,and the 557.thats why my friend at work could'nt understand the lower 1/3 co-wit that he was seeing w/ my 517 on his flattie upper. he's used to the absolute co-wit and hadnt ever seen it before. i'm just glad i'll get a lower 1/3rd,i'd hate to put out the bread for a new upper only to find it still would'nt co-wit. anyone using the matech buis w/their eotech's?
PC-Tech
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Posted: 2/6/2010 11:35:17 AM
Here a pic of my 517 on an M&P15T
buxman66
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Posted: 2/7/2010 4:55:46 PM
pc it looks as though you have a absolute co-wit going there......or is it just the camera angle? what kind of forward sight are you running?