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Old 03-23-2011, 08:53 PM
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Electraclyde Electraclyde is offline
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Join Date: Dec 2007
Location: Michigan
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Smile Picatinny/Weaver mounts

Plan to add a Holographic type of red dot sight to an M&P 15/22.
My dumb question is, what is the difference between Picatinny and Weaver mounts, and are they interchangeable?
I am old school and have always used open sights. My grandson will be shooting this gun more than I will and he seems to think it should have one of those sights to be "COOL".
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