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P239 conversion from .357 SIG to 9mm Login/Join 
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I want to get a threaded 9mm barrel to run in my P239 which is currently setup for .357 SIG. Do I need a different spring, or can I just swap the barrel and mags?

I haven't been able to find a conversion kit, but any recommendations would be appreciated!
 
Posts: 7 | Location: Boston, MA | Registered: January 27, 2003Reply With QuoteReport This Post
I'm Fine
Picture of SBrooks
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there are 9mm "conversion barrels" that will work in a 239 of another caliber (I have one for my .40 239SAS); but I don't know if a regular 9mm barrel will work. Maybe someone else knows...


If the barrel works - you don't necessarily need other springs and stuff. At least that's the case for my conversion. I can use the .40 springs and even the .40 magazines if I want.


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SBrooks
 
Posts: 2551 | Location: East Tennessee | Registered: August 21, 2006Reply With QuoteReport This Post
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Ah ha, I seem to remember some confusion along those lines, which is why I didn't do this the last time I had the question.

Can anyone confirm a threaded 9mm barrel that will work in a .357 SIG P239?
 
Posts: 7 | Location: Boston, MA | Registered: January 27, 2003Reply With QuoteReport This Post
I'm Fine
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check about 5 threads below this one - they're talking about using non-conversion barrels - and it works for some guns...


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SBrooks
 
Posts: 2551 | Location: East Tennessee | Registered: August 21, 2006Reply With QuoteReport This Post
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See my post here. Substitute .357 for .40:
http://sigforum.com/eve/forums...120047514#1120047514

Many, including myself, have successfully used Sig OEM native 9 mm barrel rather than a Bar-Sto or Fire Dragon true 9 mm conversion barrel.

I know my .40 mags feed the 9 mm just fine. However, since the P239 uses different mags for .40 and .357, you may or may not be able to use the .357 mags for 9 mm.

Finally, since you mention threaded barrel, I presume you will want to use a can on it. Don't know if that will make any difference in reliability using a Sig OEM native 9 mm threaded barrel. Haven't seen anything regarding this on the SF.


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Posts: 3562 | Location: Northeast | Registered: June 29, 2006Reply With QuoteReport This Post
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My 239 in 357 functions well with the factory 9mm barrel and 357 magazines. Sluggish, but functions.
 
Posts: 200 | Registered: December 06, 2011Reply With QuoteReport This Post
That's just the
Flomax talking
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The 357/40 slide (right) is taller and heavier, so use the lighter 9mm recoil spring.

 
Posts: 10537 | Location: St. Louis, Missouri | Registered: February 04, 2008Reply With QuoteReport This Post
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I use a factory 9mm threaded barrel in my P239 .40 with no problems. I don't change anything but the barrel and it functions flawlessly.

Edited to add that using the taller slide of the .40/.357 allows you to see the sights if you use a 1.25" diameter suppressor. Just FYI.

This message has been edited. Last edited by: Tusk,
 
Posts: 140 | Location: Bucks County, PA | Registered: December 24, 2002Reply With QuoteReport This Post
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