I have a 1st Edition, which went back to S&W due to jamming. After several weeks, a rep called and asked if they could replace the pistol with a new one. I asked why? Their response was that Walther was not supplying the parts needed to repair it. I told them no, that I would wait, since the replacement would not be a 1st Edition. Several more weeks went by and I finally received the pistol. They replaced the mags, recoil spring, and sear pin.
The pistol is a real PITA to disassemble to clean. Mine has the tendency to have the safety loosen and drop to the safe position during firing. It's picky on ammo. As noted, the sights suck. It has been sitting in the box now for quite some time. It's just not worth the time or effort to send it back, again.