will a 9mm barrel fir my 5" Pro 40 cal ? - MP-Pistol Forum

will a 9mm barrel fir my 5" Pro 40 cal ?

This is a discussion on will a 9mm barrel fir my 5" Pro 40 cal ? within the MP Gunsmithing forums, part of the Smith & Wesson MP Forum category; Will an APEX, Wilson, or Storm Lake 5" 9mm barrel fir my 40 caliber 5" pro ? I want to convert it to 9mm ( ...


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Old August 21st, 2016, 07:23 PM   #1
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will a 9mm barrel fir my 5" Pro 40 cal ?

Will an APEX, Wilson, or Storm Lake 5" 9mm barrel fir my 40 caliber 5" pro ?

I want to convert it to 9mm ( I know I'll need new mags )



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Old August 22nd, 2016, 11:17 AM   #2
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A 5" 9mm conversion barrel, available from Storm Lake, will work correctly in your 5" M&P40. A factory 9mm barrel may work, but S&W strongly recommends against it, as there have been dozens of injuries from doing so (of the hundreds of folks who try it).
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Old August 22nd, 2016, 05:34 PM   #3
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Quote:
Originally Posted by KRWeiss View Post
..... as there have been dozens of injuries from doing so (of the hundreds of folks who try it).
first I've heard of injuries

Can you elaborate ?
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Old August 24th, 2016, 07:02 AM   #4
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It's fairly well documented.

My personal experience, I've seen it happen with full size M&Ps twice. The first time, I took the guy to the emergency room to have his hand stitched up. The second time, the injured party determined there were no serious injuries, although his hand was burned, bruised, and bloodied. Online he denies the event even occurred, and continues to advocate for this hazardous practice.

Make a good choice, and be prepared for these potential outcomes if you disregard the manufacturers warnings. At least have a trauma kit available.

P.S. Both pistols were damaged, S&W declined to repair/replace either of them.
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Old August 24th, 2016, 07:11 AM   #5
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The Storm Lake CONVERSION barrel is great, I had one at one time, but sold after picking up a FS 9MM.

BTW, 9mm will work in your 40 mags. They sit slightly higher in the mag, but feed without problems.At least this is my experience. If anyone has a different experience, please chime in.
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Old September 13th, 2016, 06:15 PM   #6
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I found a solution

I traded my 40 M&P for a 9mm

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Old September 13th, 2016, 06:21 PM   #7
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I found a solution

I traded my 40 M&P for a 9mm

That'll work!
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