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Scope Tube Tolerance


jrmock

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I have been playing with building my own scope mount for my AR and one parameter I have struggled with is what the 'standard' diameter is for a 30mm scope tube. The one I own is slightly bigger than 30mm but that is not much data to know what the true tolerance range is. Anybody in the know on tube diameter tolerance? I am also interested in 1" tubes?

Thanks,

Jason

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That is why many times when you install the upper rings of the mount there is a gap when you have tightened them sufficiently. Same thing when you tighten them all the way down and the scope will still rotate.

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