You posted the question under computer terminology, but I'm going to assume by Sig P228, you're referring to the handgun. The P228 was discontinued was because the P229 was a more popular seller, and after the P229 became available in 9mm, there was to particular reason to continue selling the P228. Additionally, the P229 frame is milled from steel, making it a little sturdier than the P228, which was a stamped frame, which is probably at least part of the reason the P229 was more popular.
Best left to a SIG trained armorer
The Sig P228 and 9mm P229 both use the same frame and frame assembly. The difference is that the P229 has a machined stainless steel slide, while the P228 has a stamped slide with a breech face block pinned in place. The P229 is stronger than the P228, but the P228 is a little lighter. I personally prefer the P229. The P229's tougher frame makes it better than the P228 for stronger rounds like the .40 or .357 SIG (I don't think the 228 even comes in those calibers).Yes it does amd the p228 is easyer to mass produce.
IIRC, SIG P228
200-450 USD
100-550 usd
50-600 usd
$600 - $900
50-500 usd
50-500 usd
Go to the SIG SAUER web site, no way to post here.
A SIG P228 handgun.
MP5, Sig 552 commando, Mac 10 Ingram, Sig sauer P228