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11/8/2008 7:17:29 AM EDT
I'm about to purchase an IOR 3-18X42 with the 35mm tube. The scope comes with a set of rings (low, medium or high) I just need to pick which height I want and there lies the problem. I don't know what I need.

The upper is a heavy barrel with a flattop receiver. There will be no iron sights.

The tall rings are .75 tall from the bottom of the tube to the top of the receiver. Is this tall enough?

If not I'll need a riser. Assuming the riser is .50 what rings do I pick then? The mediums are .50 and lows are .25

HELP ME PLEASE!

Thanks
11/8/2008 7:50:37 AM EDT
[#1]
I'm using a LaRue LT-101 riser with Seekins rings. I got the scope and rings from Scott at Liberty Optics.

The Seekins low rings with the IOR and the riser work just right on my AR 10-T.
11/8/2008 9:09:25 AM EDT
[#2]
Quoted:
I'm using a LaRue LT-101 riser with Seekins rings. I got the scope and rings from Scott at Liberty Optics.

The Seekins low rings with the IOR and the riser work just right on my AR 10-T.


+1

This works perfectly (ETA: the distance from the top of the pic rail on the LT-101 to the center of scope on the Seekins low rings is 0.95"):

11/8/2008 5:25:27 PM EDT
[#3]
I'm a Larue guy, however check out ADM.  i'm pretty sure they have some in 35mm
11/8/2008 6:14:14 PM EDT
[#4]
I'm actually running the lows on my .308 AR and it is a tight cheek weld but works very well for me.  Anything higher now feels like a soft cheek weld.

If you order from Scott at LO, he has some used rings that he will include at a good price.  That way you can have a couple of choices at a reasonable price.

With the IOR rings as far forward as I can, I even get NTCH.  On a .223 receiver since it is shorter, I don't think you'd get NTCH unless you had a riser or a continuos top rail.

I really think you are going to love the scope.  I love mine and find it very versatile and balances well on the rifle.
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