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AR15.COM
3/20/2025 4:36:51 PM EDT
I keep seeing this gun pop up while searching the net.  I'm looking for a  nice holster for a 229 legacy and a lot of the drop downs list 229/ M18.
From the searching I did, it seems to be like a 229 but smaller.  I also only see it in 9mm.  Is this true,  no 40sw? Also,  do I need one?
3/20/2025 4:44:36 PM EDT
[#1]
The M18 is the military designation for the P320 "Carry" configuration.  It's not smaller than a P229, they're fairly close overall but different models so holster cross compatibility will be hit or miss depending on the holster design.

https://www.handgunhero.com/compare/sig-sauer-p320-m18-vs-sig-sauer-p229-nitron-compact

And yes, only 9mm, since it's the military model and that's what they use.

3/20/2025 7:52:06 PM EDT
[#2]
I think I made an error. I was thinking of the 228. For some reason I thought the 228 was a M18.
What's the difference between the 228 and 229?
3/20/2025 8:17:47 PM EDT
[#3]
Quote History
Quoted:
I think I made an error. I was thinking of the 228. For some reason I thought the 228 was a M18.
What's the difference between the 228 and 229?
View Quote
At one time the 228 was smaller/slimmer than the 229 since it was designed for 9mm. When the 40 S&W came out they had to beef up the slides and IICR the frame as well. They started just building them both on the 229 frame which really screwed up a sweet compact in my opinion. I want to say they started just offering the 229 in 9mm, 40, and 357 Sig but I could be totally wrong on that.
3/20/2025 8:17:51 PM EDT
[#4]
I think the P228 was the M11 in military service.
3/20/2025 8:22:07 PM EDT
[#5]
Quote History
Quoted:
I think I made an error. I was thinking of the 228. For some reason I thought the 228 was a M18.
What's the difference between the 228 and 229?
View Quote


There is a P229 M11-A1 that is slightly different that the standard P229 as it comes without the rail. There is also the P226 Mk25. The P226 platform is slight longer than the P229. The M18 is a P320 based model.
3/20/2025 8:23:35 PM EDT
[#6]
The P228 was originally the compact alternative to the P226.  The P229 came after and just took the 228 and beefed up the slide and the frame a bit so it could be chambered in .40 and .357 Sig.

Then over time, they discontinued the P228, redesigned the P229 a few times and started offering that in 9mm as well.

Then after even more time, they brought back a "retro" P228 model named the M11a1, because that was the old Navy designation for it, but for the most part it's just a P229 that looks a bit more like the old 228.

So not sure what you saw exactly, either an older P228 model from Germany, or a new production M11a1 inspired model.
3/20/2025 10:07:45 PM EDT
[#7]
229 226 220 series guns are great in my opinion. I bought some 320s and was not accurate with them. I sold them and now use 229s and 220s. I have a 365XL that I shoot better than the 320s I had. The 220 is very accurate with good loads.
3/21/2025 5:28:01 AM EDT
[#8]
Thank you,  all.
Yes, many of the holster drop down menus list 228/229. I have a 229 no rail with what I believe is a legacy slide (the serrations don't cover the entire height of the slide).
Just trying to make sure I pick the appropriate holster.  It's new to me in .40, so I don't mind the size,  but a slimmer 228 in 9mm sounds like it would be great.

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