bc1023 said:
It was actually the P220 that was built to replace the P210. The P225 came a few years later. The P220 was the first pistol ever built by Sig Sauer and its intent was to replace the P210 at a much cheaper production cost. The P225/P6 was the compact version of the P220. The P226 was the double stack "version" of the P220. The P228 was the compact version of the P226.
And the P229 was a beefed up version of the 228, intended to handle the SIG .357 round. I don't know where the P227 falls in all of this.
And then there's the M11A1.
With regard to your main point, above. Your right.
My error.
As you note, the P220 (in 9mm)
was developed for military use and was designated
Pistole 75. The P6 was a more compact version developed almost immediatelyl The p6 is related to the P220, like the P228/P229 are related to the P226 (which, is a double-stack version of the P6/P225!!) Your point, which is correct, was (from Wikipedia, but with my underlining) that:
The SIG P220 was developed for the Swiss Army as a replacement for the SIG P210, which had been developed during World War II; in service it is known as "Pistole 75" (P75). For development of the P220, SIG collaborated with J.P. Sauer & Sohn of Germany, thus, the P220 and all subsequent pistols from SIG are properly known as SIG Sauer pistols.
I post the following from the same article (with my underlining added) for others reading here:
A new German police standard, in the mid-1970s, prompted SIG-Sauer, Heckler & Koch, and Walther to develop new pistols that met the standard: the Walther P5, the SIG-Sauer P225 (known as the P6) and the Heckler & Koch P7.... Each German state was free to buy whichever pistol it wanted to. Initially, the P220 was submitted; the P225/P6 was created to conform with the mid-1970s West German police requirements for its standard service pistol. The SIG-Sauer P225 was the least expensive (due mainly to the inventive design) and received the majority of the orders. ... The only difference between the P6 and P225—the P225 (which was adopted by US civilian law enforcement) has a lighter trigger pull, whereas the P6's trigger pull is heavier...
The Swiss apparently military liked the 9mm P220 (P75) but the German police didn't. The P220 (in 9mm) was submitted for police use, but not accepted. I'd argue that the P225/P6 had the same relationship to the P220 that the P228/P229 have to the P226 --and they're all derived from the single-stack P220. The German police ended up with the P6/P225s, some H&K P7s, and some Walther P5s.
I guess the German Police acquisition in the 70s explains all of the surplus P6s, P7s, and some of the Walther P5s floating around over the last 10-15 years. On the other hand, while I have seen some Swiss, Danish, and maybe German Border Guard
P49s (all SIG P210 variants), I don't think I've ever seen or heard of a surplus SIG P75 in 9mm. Wonder why?