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Morning all,

Reading a recent post about P239 caliber conversion has me wondering if the P225-A1 is also capable of using the P239's 40 and 357 barrel and magazine followers (if different than 9mm). Anybody own both and have tried assembling it?
 

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No, don't believe that would work. The 9mm slide is not big enough to handle the pressure generated by the 357 or 40 caliber round.

Even if you had the bigger P229, 9mm, you would need the the wider, heavier slide to use 357 SIG or .40 S&W.
 

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No, don't believe that would work. The 9mm slide is not big enough to handle the pressure generated by the 357 or 40 caliber round.

If you had a 229, 9mm, you need the the wider, heavier slide to use 357 SIG or .40 S&W.
What he said.
The 225 is probably the best 9MM Single stack out there. But the 239 can Download to the 9MM barrel, magazine and spring. The 225 cannot Upload to the .40 or 357 SIG barrel, magazine and spring.
 

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The primary reason the P225-A1 9mm will not accept the 40/357 barrels has to do with the width of the breech face of the slide. The 40/357 slides have a breech face that is ~10mm wide. The 9mm slide has a breech face ~9mm wide. The barrel extension (the portion of the barrel that mates with the breech face) is wider on the 40/357 barrels, hence too wide to mate with the 9mm slide.
 

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The 226, 239 and 229 are convertible as long as you have a .40 or .357 gun both will change between calibers with a simple barrel swap or you can buy a 9mm conversion barrel for range use for any of them, the .357 and .40 share a breach face. As stated before if you buy the 9mm version of any of themyou are stuck with 9mm you cant convert up .
 

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What 22LR conversion kits would work on a P225-A1? I would assume a P229 would work. Any others? I'm new to the P225-A1, and pretty new to handguns.
As Subhuman mentioned NO .22 conversions were made for the P225A1, and the only switchable slides between models, would be the P220, and P227, in .45 Auto. Subtle differences in Take Down notches, and Slide Catch notches, plus Disconnector cutouts prevent slide swapping. Locking Insert design and a barrel's lower lug design, must be compatible to work, in tilting the barrel into lockup in the ejection port.

While a Talented Gunsmith might be able to fit and modify a P229 Non-Railed Conversion slide to fit, you wouldn't have any magazine to feed it... as even a P220 magazine dwarfs the P225A1
 

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The 226, 239 and 229 ... As stated before, if you buy the 9mm version of any of them, you are stuck with 9mm, you can't convert up.
... unless you purchase a .357 Sig or .40 S&W X-Change Kit (which consists of slide + barrel + recoil guide rod and spring + sights, and a single magazine). At least, this is the case for the M11-A1 and newer P229's.

rx7sig
 
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