backup irons need LOTS of adjustment to zero

Jayne

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I got a set of 45 degree offset flip-up sights so that I could hard mount my main optic and while zeroing the irons I found that it took a lot of adjustment. It's zeroed at 50 yards and holding, but looks really strange. Is this normal? Is that why they put that much adjustment in there to compensate for wonky rifles? Is my hand guard crooked slightly? This what happens when you mount them gangsta' hanging off the side of the rail?

Should I put a drop of lock tight in there to keep it from getting bumped out of zero?

IMG_2057.jpg
 
Usually this is caused by the upper not being square where the barrel meets the receiver. its got the barrel pushed at an angle, therefor your sights have to be adjusted a lot to 1 side or the other.
 
Solution:
Toss in garbage can.

But seriously, if they are not lined up perfectly with bore (like the scope) the zero is going to be different.
Like if you turn rifle sideways your bullet is going to impact nowhere near your regular zero.
So, maybe these are square to bore, but maybe offset slightly, which would show up like that when you zero.
 
Are you maintaining a consistent check weld when transitioning to them?

I was firing it off a bench while zeroing, so I'm going to say yes. Haven't done much with them off hand or transitioned to them at speed yet. More training and practice.
 
What brand are they? I've always thought the offset were a problem trying to be a solution to a problem that really doesn't exist.
 
Are you sure that the front sight is rail height and not gas block height? Ran into this with a friend’s rifle and that does all sorts of wonky stuff to sight alignment.
 
When you sighted in the rifle, were the sights directly above the bore of the barrel or did you not cant the rifle enough to make that so?
 
When you sighted in the rifle, were the sights directly above the bore of the barrel or did you not cant the rifle enough to make that so?

I like this theory...almost like a parallax situation.

Is my hand guard crooked slightly?

Does the handguard have a top rail and does it line up perfectly with the receiver? I tried putting an eotech on the handguard long ago and that is when I learned the very slight rotation to the left was causing the zero to be wonky on it as well.
 
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Ask that you post a picture of the receiver/rail alignment. I would not locktite the sights, instead use a paint marker/sharpie to mark zero.

CD
 
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