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Smith & Wesson M&P Pistols All Variants of the Smith & Wesson M&P Auto Series


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Old 03-20-2020, 01:20 PM
REP REP is offline
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Default MP22 Compact Magazine Questions.

How long would you leave a magazine fully loaded for before unloading it to let it relax? Also has anyone here have any experience with +2 or +4 magazine conversion kits on the market?
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Old 03-20-2020, 03:24 PM
Dave Lively Dave Lively is offline
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MP22 Compact Magazine Questions. MP22 Compact Magazine Questions. MP22 Compact Magazine Questions. MP22 Compact Magazine Questions. MP22 Compact Magazine Questions.  
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Depending on who you ask it is either compressions/decompression cycles or time at maximum compression that wears out springs. I have a 870 shotgun with a magazine spring that got weak from being fully loaded for several years so I am not buying the current theory that cycles is all that matters.

The magazines for my 22 compact are never loaded for more than a few minutes since it is strictly a range gun. But in general I would not worry about it and leave them loaded for as long as you want. They will get weaker but should still work fine. I heard of some older designs like 1911 magazine springs getting so weak they cause problems when left fully loaded but modern ones do not seem to ever have a problem.

Unloading them to "relax" them will not do anything to reverse damage.
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