Originally Posted by
JTQ
This is all from memory, I haven't read this stuff in a while...
Referencing John Hearne's posts, I believe he uses stainless framed P220's. I also believe ToddG has some comments on the forum, about the lack of flex the SS frames have which may contribute to shortened longevity of some small parts. I think John Hearne has also commented he's used a P245 as a back up gun, and ended up using it in a class when his P220 broke (I can't remember what broke). I believe his comment was the P245 was difficult enough to shoot, relative to the P220, that he'd take the concealability hit with the P220, so he could have an easier to shoot gun. Hopefully, John Hearne will pop in to correct my errors, if I've made any.
Another point regarding the durability of the entire SIG line-up is the P220 was designed for 9mm and then became a .45 Auto and .38 Super launcher. The P229 was designed as a .40 S&W gun.