using a mag lowers it's life, not leaving it compressed. leave 'em loaded as long as you like. it won't matter a bit until you start compressing/decompressing them through use.
The search function is your friend
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Honestly, If people on here used the search function for everything you would be looking at the same 80 threads every day. Maybe cut the newbie a little slack?
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INGO has a search function?