The slides vary in weight, profile & extractors.

The P229 357/40 frame uses double taper magazines from mag catch slots to feed lips.

The P229-1/E2 9x19 magazines are configured as above.

A P228 & 226 magazine have a single taper from the mag catch slots to the feed lips that fit loose in a P229 frame & rattle ,but function.

A P228 9x19 Bbl's profile under the feed ramp & boss forward of the Bbl lug vary from a P229-1 9x19 Bbl profile & would require machine work or a P228 Locking Block to fit & function in a P229 frame.

 

Here's a pistol with a slide similar to what I have on the way

GunBroker.com - Error

Here's a pistol I'm looking at

GunBroker.com - Error

It looks like it shouldn't be any difference but would hate to buy it and the other slide not fit. Thanks!

 

Here's a pistol with a slide similar to what I have on the way

GunBroker.com - Error

Here's a pistol I'm looking at

GunBroker.com - Error

It looks like it shouldn't be any difference but would hate to buy it and the other slide not fit. Thanks!

The description says DA/SA but the pictures are of a DAO. No decocker. And it says it uses 13 round mags. So I don't trust the ad to.provide sufficiently accurate information to tell you whether it will fit or not.

 

A P229 Slide will fit on any P229 Frame. As DansSIGs was trying to explain, different barrel/slide combinations require different Locking Inserts. What you have shown in both of your examples, are Legacy style slides, with one having the "Elite" forward cocking serrations, and the frames "appear" likely to have the earlier P228/P229 smaller magazine well size, which will not take P229 .357/.40 magazines. So you couldn't use those magazines marked P229-1.

Since you haven't mentioned deviating from 9mm, you should be all right.

 

I should have read your initial post more closely, as mentioned the .357 Sig/.40 S&W Slide will fit, and you would have to use a different Locking Insert. to install it on either of the P229s mentioned in post #3.

The problem, is you could not use P229 .357 Sig/.40 S&W magazines in either pistol. You could use P226 .357 Sig/.40 S&W Magazines, which would extend about 1/2" lowers than the bottom of your grip.

 

.....never mind....

 

I should have mentioned earlier I would like to be able to shoot 9mm, 40, and 357 sig. The 40/357 uses the same accessories except the barrel. The 9mm used a different slide and spring. Finding a slide for any of the calibers has been difficult but I found a slide, barrel, and spring for 357 sig. So is it possible if I get a p229 in 9mm I can change it to 40/357 or is there something else I need?

 

It's easier to get a P229 in either .357 Sig, or .40 S&W, so that way you can use P229 .357/.40 Magazines. Then if necessary you can use a 9mm Conversion barrel in the .357/.40 Slide to shoot 9mm with the appropriate Recoil Spring and Magazine.

As mentioned earlier, and maybe not explained very well, many early 9mm P229s used the same Magazines as the P228, which is based on the P226 Magazine profile. When the P229 was initially designed, they had to enlarge the Magazine, to provide a capacity of 12 rounds of .357 Sig, or .40 S&W. This created a profile which has a slightly wider body, and dual taper to the single column feed.

In the photo below, the 2 Magazines on the right, are P229-1 9mm Magazines, the same dimensionally as .357 Sig/.40 S&W P229 Magazines, which have the dual taper...

The 2 Magazines on the left are the early P228/P229 9mm Magazines which are shortened versions of P226 Magazines, and have a single taper...

While the P228/P229 9mm Magazines can fit in, and function in a later P229-1 sized Magazine well, the later P229-1 Magazines cannot fit in the earlier 9mm Magazine wells.

Honestly, I'm getting tired having to explain this so often, so many threads beat this subject to death...

 

I've settled on a 40 s&w, and I have a 357 sig barrel on the way. So am I reading correct that all I need for 9mm is a barrel and magazine or is anything else required? Thanks for all the info!

 

What you need is a "Conversion Barrel". mde by someone like Bar-Sto, or EFK, since Sig does not make a conversion barrel. In the P229, the tube's outside diameter of the .357 Sig or .40 S&W are larger than the 9mm OEM Barrels, so proper lockup in the slide would be impossible.

Sig P-229 9mm Conversion - Bar-Sto (barsto.com)

https://www.efkfiredragon.com/proddetail.php?prod=SS2299SBCDFBK

 

What do you think about this?

GunBroker.com - Error

 

As long as it hasn't been fitted to another Slide, as is stated in the description, not a bad deal, if you want a threaded barrel, as it has 4 magazines which are worth around $160 if new.