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Thumb safety

This is a discussion on Thumb safety within the MP Pistol Tech Help forums, part of the Smith & Wesson MP Forum category; Can the thumb safety from a M&P40 be put on a M&P45?...

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Old October 13th, 2015, 02:11 AM   #1
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Thumb safety

Can the thumb safety from a M&P40 be put on a M&P45?
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Old October 13th, 2015, 02:49 PM   #2
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Ill say right off, subject to error, but no... the physical dimensions of the 9 and 40 are the same, the 9/40 and the 45 are different, the 45 is a larger frame and I suspect a larger block AFAIK..

Looking for validation or correction..

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Old October 14th, 2015, 05:12 AM   #3
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Do you have a gunsmith nearby?

Ask the Smith to look up the part numbers to see if they are different.
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