The Sig you have may be a P 226 C (combat) Model. Here is the info on them.
Like the P220 Combat before it, the two models, P226 Combat and P226 Combat TB (Threaded Barrel), are available in DA/SA. Their frames are "Flat Dark Earth" in compliance with the Combat Pistol program. The Combat model comes with night sights, a Nitron-finished slide and barrel, fore slide serrations, and a military standard M1913 Picatinny rail as well as phosphate coated internals. The TB model features an extra 0.6 in (1.5 cm) on the barrel, and external threads to accept a suppressor
I have a first generation P229 in .40 cal and the only gripe I hjave is that its heavy for concealed carry. If you are using a duty concealed carry, you can't beat it unless you go to a .45 cal.. Accuracy is a drop of4 inches at 100 yards and the 185 grain loads are the same as I carry in my Combat Elite, they are just twice as fast, 1500-1700 fps. You can also change the barrel out and use the same mags, springs etc., and drop the .357 sig barrel. 9mm bullet at twice its normal velocity, 1 inch drop at 100 yards.
By the way, I have my sights set at 50 so this explains the short drop at 100.
Good luck and If that Sig fits your hand, you are gonna love it!