I have this Beautiful and Rare Strayer-Voigt Infinity 2011 semi-automatic pistol in .40 S&W / 10mm. Serial number- 580566. This pistol is in great condition and comes with 3 magazines. We reached out to Strayer-Voigt what this 2011 was chambered in and they informed us that .400 Cal barrels could be chambered in .40 S&W or 10mm. Strayer-Voigt build top of the line custom and competition 2011s and this Infinity has a very light trigger, smooth slide, and unmatched ergonomics. There are few handguns in the world that can match the SVI Infinity in quality