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AR-15 Scope Solution

Posted: Mon Nov 28, 2011 12:54 am
by TDDude
I had purchased some Picantinny/Weaver type scope rings for my AR a few months ago but never mounted them because I thought they weren't high enough. They place the scope directly inline with the A2 front sight.

However, I was rather bored today so I took the Aimpoint off and mounted the scope anyway just to see what would happen and it works perfectly. Perhaps someone more in tuned with how the optics work on riflescopes can tell me why the image is perfectly clear. That front post is simply not visible at all when looking through the scope.

I don't care how it works, only that it does. Now my 12 yr old daughter has a rifle she can hunt with. :hurry: :hurry: :hurry:

This really jazzes me because I was having a heck of a time finding rings that were high enough that didn't cost hundreds. The rings I purchased were from UTG model RGWM-25H4 and Amazon has them for $10.00. The scope is a Redfield Tracker 3x9 that I found in a pawn shop about 10 years ago.

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Re: AR-15 Scope Solution

Posted: Mon Nov 28, 2011 11:20 am
by texasmusic
its caused by the near point of the lens. In other words a certain optic can't focus on anything within a certain range. Like if you try to focus on a small sctratch on eyeglasses. If you turn down the power and look through the scope against a white surface, you'll probably see a blurred image of your front sight. ( at 4 power I can see mine)

Re: AR-15 Scope Solution

Posted: Mon Nov 28, 2011 12:22 pm
by TDDude
texasmusic wrote:its caused by the near point of the lens. In other words a certain optic can't focus on anything within a certain range. Like if you try to focus on a small sctratch on eyeglasses. If you turn down the power and look through the scope against a white surface, you'll probably see a blurred image of your front sight. ( at 4 power I can see mine)
Well, that makes sense. Can you tell if it hurts the light gathering for shooting at dusk? It looks like the front post is covering at least 20% of the glass area so I was wondering if 20% of the light would be cut.

I'm just wondering what to expect. This scope already has some minor issues. Eye relief area is very small and there seems to be "out of focus" spots when looking at the entire visible field of view. The area around the cross hair is crisp and sharp and paralax is good. With all that it still holds zero very well.

I called Leupold and they won't fix the old Redfields so I'm glad I could find it a home.

Re: AR-15 Scope Solution

Posted: Mon Nov 28, 2011 1:19 pm
by texasmusic
With my 1-4x you can see the front sight clearly at 1x but as you crank the power up it just becomes a small blur in the bottom of the image that you won't notice until you move your eye around a little. And that's with a magpul front sight which is pretty wide. I think you'd be fine with the A2. You also have a bigger front lens than I do, in my experience when you have a front lens bigger than the eyepiece it actually brightens the image compared to the naked eye. Kind of like a funnel for the light.

Re: AR-15 Scope Solution

Posted: Tue Nov 29, 2011 8:16 pm
by slinco
You could go with a couple mini scope risers under your rings to get a little more height.

Re: AR-15 Scope Solution

Posted: Thu Dec 08, 2011 7:47 pm
by rm9792
My .02 cents. Leave the scope as low as you can and still get a proper weld. The front sight will not be an issue but inconsistent cheek welds and too high a scope from the bore will be an issue. Get quick releases (quality ones) if you want to use your irons on occasion. You can spend a little more and get a swing away mount for you scope.