In general, are SIG P232s good-quality, reliable guns nowadays? I figured they were, and bought one. At the range, though, the slide frequently failed to lock back after the last round was fired from either of the original mags, the firing pin indent on the cartridge primers varied in depth (even among cartridges from the same box of ammo), and the primer strike was off-center. Now I'm wondering if this gun is worth keeping, or if maybe I should just trade it away. TIA for any input.