We can't tell yet. Need better photos. What you can do right now is borrow or buy a laser bore sighter and compare where the barrel is pointing to where your iron sites are pointing. To answer your valid question as is; ... no, that is too much wind age adjustment right now.
Ideally, on a perfect build, that pesky rear site aperture should be with four, (4) clicks from exact dead center ... when using OEM front and rear sites. With after market site and gas block combinations, it is harder to get a reading on it all. Several time consuming but easy fixes.
HB of CJ (old coot) (hundreds of AR15 builds) (still here on this forum ... for now)
Yeah...I love the PRO. Going to buy a second one for my newer Colt AR pretty soon. They are very durable and I have never had to adjust it. Hell...I have not even touched the battery yet! LOL
Your mis-aligning of an added quad rail is not really new and seems to be pretty common. Many on M4Carbine.net's boards have posted with similar issues. they too seemed to have gotten the thing mis-aligned at first but got it worked out.
That is a huge reason why my second AR was the Colt 6940. Monolithic rail from the factory and fully floated. Open sights lined up with little drifting at all. Seems to be one of Colt's more over-looked ARs and I don't know why.
Keep messing with it...you will get it aligned right.
I haven't touched it, it was built by BCM so I'd be a little surprised if it was off that much. Can a small amount really cause that much at the rear? At least it's the weekend and I'll be able to really look tonight.
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