Rifle Scopes Leupold mr/t mk4 question

m1ajunkie

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Feb 22, 2010
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What does the "+ 0 -" mean at the very rear of my leupold mr/t mk4 2.5-8x scope? I can't seem to find anything about this in the manual. The rear most ring is movable, but when looking through the scope and rotating the ring, nothing seems to be changing.

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