Scope worth losing rear BUIS?
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Old 05-09-2011, 01:31 AM   #1
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Default Scope worth losing rear BUIS?

I've got a flat-top AR-15 that has only iron sights. I've got a YHM flip-up front sight gas block and a picatinny rear back up iron sight, also YHM.

I'd like to add a scope, but so many of the options will take up the entire real estate of the flat-top rail.

Is losing the rear sight worth having a scope? I'm thinking of a 1-3x-30mm scope by Barska, but I am open to thoughts.

There are risers, etc., but I don't want to raise the scope too high to mess up the cheek weld.

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Old 05-09-2011, 01:48 AM   #2
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Length of barrel? Application? Full length rail, or standard 1913 rail?

A little more info would help us help you....

JD

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Old 05-09-2011, 02:14 AM   #3
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Have you thought about mounting a Long eye relief pistol scope or a "SCOUT SCOPE" on it?

Burris 2-7x32 Handgun Scope

Burris 1.5-4x26 Handgun Scope

Burris Scout Scope.

Burris 2.75x20 Scout Scope

Leupold 2.5-8x32 VX-3 Handgun Scope

Weaver 1.5-4x20 Classic Handgun Scope

Weaver 2.5-8x28 Classic Handgun Scope

You might be able to mount it into one of these for a chance to get it a little further down the rifle.
http://www.midwayusa.com/viewProduct/default.aspx?productNumber=199560

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Old 05-09-2011, 02:28 AM   #4
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What are you going to be using it for? My AR needed a scope but the next one I do will be a 16" barrel with irons only.

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Old 05-09-2011, 03:24 AM   #5
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Well, this is the same rifle that is discussed completely here: First AR-15 Build...Here I go!

It is a 16" barrel, but the length of the rail isn't clear to me. I could go measure it, but I thought flattop uppers were to some degree a common length. The numbered picatinny rail goes to 13.

I was considering this scope: Barska 1-3x30mm, but would have to remove the sight.

This Leupold Elevated Riser might make the difference in allowing for the rear sight AND be high enough for cowitness.

Edit: Use? Zombies a block away.

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Old 05-09-2011, 03:32 AM   #6
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Tango, those handgun scopes look pretty good, but 11" minimum eye relief does not seem to be enough for an AR. The price range ($150-300) seems about right for my pocketbook, though. I liked how the Barska at Optics Planet had a larger objective (30mm vs. 20mm of those HG scopes).

But I do like your idea of a reticle that does NOT require a stupid battery. And with a base like you suggest, I think there would be more than enough room for the rear sight PLUS it would be far enough forward for the increased eye relief required.

Thanks for leading me in that direction.

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Old 05-09-2011, 04:10 AM   #7
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nothing wrong with a battery powered reticle long as you can use the reticle in bright sunshine and at nite with no working battery

a block away under 300yds a riser makes no diff at all. my pref is the traditional fixed carrying handle and if i mount an optic its waaaaay above the bore. the 556 round doesnt drop much up to 300yds. past that its a different issue.

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Old 05-09-2011, 10:33 AM   #8
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Chris here is a nice budget minded SCOUT SCOPE 9" of eye relief. It is only about $20 more than the one your looking at.

Weaver 4x28 Classic Scout Scope - Weaver Riflescope FREE S&H 849417. Weaver Classic K-Series Riflescopes, Weaver Riflescopes.

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Old 05-09-2011, 01:08 PM   #9
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If you get an extra tall cantilevered scope mount you might get enough eye relief plus be able to keep a rear BUIS folded down. Usually extra tall is ideal for the AR anyway.

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Old 05-09-2011, 11:43 PM   #10
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I am definitely thinking magnification that is adjustable. 1-4x or 1.5-4x is my hope. With 1x available, I'll be able to keep my support eye open. But I'm open to other thoughts on this issue.

I would love for it to be just the right height for co-witness, but far enough forward that I could still fold down my sight. I think I'd better get out my tape measure and start doing some figurin'.

Thanks for all your AR-15 Builder help!

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