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Old 10-22-2011, 11:35   #1
paddywonka
Junior Member
 
Join Date: Mar 2007
Location: South Shore Lake Michigan
Posts: 8
What does +0 or +1, when choosing sights?

Buying a set of night sights for my Glock 32. Keep seeing +0 or +1 in the description, but can not find what this means. Can some one shed some light?
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