Smith & Wesson has sold over one million units of the Shield since its release in 2012, and it’s easy to see why. The Shield is essentially the full size M&P pistol that has been shrunk down into a single stack configuration. The Shield is available in 9mm, .40 S&W, and .45 ACP. It also is currently available in the 2.0 configuration, with greatly improved ergonomics and better stippling on the grip. Standard capacity is seven rounds, but extended eight round magazines are also routinely available.