I don't think you can shoot .357 in your 9mm at all, but I would call Ryan @ Sig to be certain and he will also have info on availibility of .22 conversion kits as well .....866-619-1128

I inquired about the same thing. You need to buy the complete x-change kit for the 226. The 226 can be converted but the 229 can not be unless it started out as a classic 229 in 22 cal. This is the information I got off the sig forum from Osage county guns, that sell the x-change kits. I have not done it yet so it still might be best to call sig.

Originally Posted by chessail77

I don't think you can shoot .357 in your 9mm at all, but I would call Ryan @ Sig to be certain and he will also have info on availibility of .22 conversion kits as well .....866-619-1128

I ordered the Xchange 357sig barrel and slide, put it on my Enhanced Elite 9mm frame and shoots like a dream.
I guess you can shoot any caliber with a Xchange slide kit.

Originally Posted by DNS

I inquired about the same thing. You need to buy the complete x-change kit for the 226. The 226 can be converted but the 229 can not be unless it started out as a classic 229 in 22 cal. This is the information I got off the sig forum from Osage county guns, that sell the x-change kits. I have not done it yet so it still might be best to call sig.

Osage is giving more detailed info on their site about the P229 now.


Sig Sauer P229 Conversion Kits

Caliber Exchange Kit versus Conversion Kit:

Sig Sauer uses the designation caliber exchange kit to refer to centerfire conversion kits. If you are converting your P229 to 9mm, .40 S&W, or .357 Sig, you are buying a caliber exchange kit.

Sig Sauer uses the designation conversion kit specifically for .22 LR conversion kits (only).

Sig Sauer started using a universal locking insert on all the P229's produced in Exeter allowing for greater compatibility with their caliber exchange kits.

There are a variety of kits available allowing you to change caliber on your pistol but there are a few caveats below. On each of the product pages we have also listed compatibility but if you have any questions, definitely call us (573-859-6044) to confirm compatibility for your model.


German Frame P229's:

German Frame P229 - .40 S&W & .357 Sig

If you have a German made frame, your frame is only compatible with the .22 LR conversion kit or the same caliber centerfire caliber exchange kit of your current pistol.

For example, if you have a P229 chambered in .40, you could use the standard .40 Caliber Exchange Kit to replace your slide / barrel or you could use the Elite Legacy kit to upgrade to an Elite slide. The same goes for the SAS kit.

You can also buy a .40 S&W barrel for your .357 Sig and convert it without buying the full caliber exchange kit. The vice versa is also applicable.

German Frame P229 - 9mm, 15rd

If you have a German frame P229 chambered in 9mm that came from the factory with a 15rd magazine, all of the above centerfire caliber exchange kits will work on your pistol. The .22 LR railed conversion kit will work on railed models but the non-railed model will not work on a non-railed P229 9mm that came with a 15rd magazine.

German Frame P229 - 9mm, 13rd

If you have a German frame P229 chambered in 9mm that came from the factory with a 13rd magazine, only the 9mm Elite Legacy caliber exchange kit will work on your pistol. The railed .22 LR conversion kit will work on railed German models and the non-railed conversion kit will work on non-railed models.


Exeter, NH Frame P229's:

Exeter, NH Frame - .40 S&W / .357 Sig

If you have a P229 with a frame that was manufactured in Exeter, NH and chambered in .357 Sig or .40 S&W, any of the above conversion / caliber exchange kits will work with your pistol.

The only exception to this is the P229 SAS (non-rail). The P229 SAS is not compatible with the P228 / P229 non-rail conversion kit despite it not having a rail. The P229 railed conversion kit will work on it but there is a gap between the dust cover and slide (roughly 1.5 centimeters).

Exeter, NH Frame - 9mm, 15rd

If you have a P229 with an Exeter, NH frame and 15rd magazine capacity (if the magazine included with the pistol from the factory was a 15rd magazine), then all of the above conversion / caliber exchange kits will work.

The only exception to this is the P229 SAS (non-rail). The P229 SAS is not compatible with the P228 / P229 non-rail conversion kit despite it not having a rail. The P229 railed conversion kit will work on it but there is a gap between the dust cover and slide (roughly 1.5 centimeters).

Exeter, NH Frame - 9mm, 13rd

If you have a P229 with an Exeter, NH frame, chambered in 9mm, that came from the factory with a 13rd magazine, only the 9mm Elite Legacy caliber exchange kit will work on your pistol. The railed .22 LR conversion kit will work on railed Exeter models and the non-railed conversion kit will work on non-railed models.

The only exception to this is the P229 SAS (non-rail). The P229 SAS is not compatible with the P228 / P229 non-rail conversion kit despite it not having a rail. The P229 railed conversion kit will work on it but there is a gap between the dust cover and slide (roughly 1.5 centimeters).

I emailed Chris at Sig about this. According to the website, My gun should accept the conversion kit. But I just want to make sure. Waiting on his reply. They are very busy right now. I bought the new 9mm two-tone for $850. Include the conversion kit for $350, and you have 2 guns for a price of $1200. The catch is this. Your better off buying the Sig Sauer P229 Classic .22LR for $529.00 and getting the conversion kit for $350, then you will only have $879.00 for 2 guns.... That is, if you're interested in the 22 version of the gun. 22's are much cheaper to practice with. If I had it to do over, I would have bought the 22lr for $529 and then purchased both the 9mm and 357 kits.