Not too long ago, I purchased a SIG P-226 Tac-Ops pistol chambered in 9mm.
I bought one with a threaded barrel. It comes with (4) 20rd. magazines and night sights. Of course, the name pretty much implies that it is a handgun of the highest standards.
I also acquired four more factory 20rd. mags for it, as well as a standard barrel, and a SureFire X-300 Tactical Light for it. I went to the trouble and custom ordered a Pelican two level gun case for it, that houses everything that I have mentioned above.