Offered in either 9mm or .40 S&W, SIG’s P320 X-Five is a full-size 5.0-inch-barreled pistol designed for competition. It’s based on the polymer-frame P320 but has been upgraded with the X-Grip module and an enhanced flat trigger. The slide features lightening cuts on top, and the pistol comes with a fully adjustable Dawson rear sight, a Dawson fiber-optic front sight, and a flared magwell. The P320 X-Five accepts weights in the back of the grip. Magazine capacity is 21 rounds in 9mm and 18 rounds in .40 S&W.