My understanding is that the modular concept, while sold here in the US, was really more intended for Germany where total numbers of handguns that can be owned are limited. If you can only have a couple handguns one that can be switched around at will makes a lot of sense. If there's no upper limit there's little point in saving $100 or so in getting a conversion kit other than a complete other gun (but then, there are occasional reasons for it).
I will agree that it was a commercial miss, but the reports of unreliability all miss the actual nature of that unreliability. All we know is that for some reason it failed a test done by a fed agency... that reason, so far as I know, has never been revealed. Since then Sig has done some minor tweaking and all reports are that it's as solid as Gibraltar now. My P250s have been solid, I've yet to read someone who says their (updated) model has been problematic. All the dislike is about the trigger, which I can understand is not for everybody. There's a reason DAOs are a rather small part of the semiauto market.
Sig still thought enough of the design to make the P320 an evolution of the P250 design- it uses a different fire control module and slide but all the rest is the same as the P250 (I *think* the barrel is the same, I *know* the grip frames and magazines are... at least Sig said they were). The P320 may be a case of too little too late for many, but in terms of a decently functioning pistol with good ergonomics, the P250 and its descendant seem to be very much a "hit."
It was always my understanding that the P250 was designed by Sig in the US mainly for the US market but I could be wrong. I always understood the modular concept was to help fit many different shooters and many different needs, compact vs full sized duty gun, with one single platform.
I agree the reliability seems to be worked out now that the buying public has given Sig enough feedback on what did not work with the pistol. As it failed 2 different pistol trials on 2 different continents so I do not think that you can blame its failures on the ATF as Sig attempted to do.
The P320 IMHO is not an evolution of the P250 as much as it is a replacement. Agencies are not looking for DAO revolver style trigger systems for guns they are looking for striker fired tactical plastic. Sig lacked that in their line up so they leveraged existing technology within the Sig lineup and developed a striker system for it to save time and money. IMHO very smart but they only did that because no one at the contract level wants the P250. Have to find a way to move some metal or in this case poly.....
I actually think the P320 will sell more than the P250 and eventually replace it. Almost no one in todays market is seeking out a DAO polymer pistol. The polymer market is dominate by striker guns and that IMHO is what most people are looking for. Some are looking for lighter polymer versions of their favorite metal guns like the CZ line but again they are in the minority. I find most people who want a hammer want a metal gun. YMMV.
Initial reports about the P320 trigger are positive and the main complaint about the P250 is the trigger. People like the frame ergos. It might be a very popular gun in CA because of the timing of its release. There the modular concept will be an advantage.
I think if you like the P250 trigger they are a great value today because at a $350 price point there is not much else that is as good NIB but I think if you move up in price to even $450 your options really open up and Glock, Sig P2022, CZ and M&P all start to come into play and offer much better options and long term viability.
Why not DAO in a service handgun? It provides a single type of action to master (ie: DAO instead of DA, SA & the transition, for example), the long trigger pull makes every shot deliberate (ie: reduces the chances of a stress-induced ND) and in the case of the P250 provides a DA that's superior to any DA/SA pistol that's anywhere near the price of the P250. JMHO...
Tomac
No problem with the DAO part of this response but I think the DA on the P250 being superior to any DA/SA pistol at anywhere near the price of the P250 is simply not the case.
Sig P2022 can be had for $400 with night sights... and has a very long but ver smooth DA trigger and the SA is about what you would expect from a Sig.
You can get a CZ P07 Omega for almost the exact same price as the P250. I guess it all depends on what you consider "near" the price of a 250.
Again I am not knocking the gun in its current form but it is not for everyone and when I try to look at it objectively it is a good gun for the $$$ it currently sells at but is far from best in class when you consider it was supposed to sell in the $500+ range like the P320 is currently. Only by discounting it did people start to like it.