The Sig 320 X-Five is the flagship of the 320 X-Series. Sig calls it the “pinnacle for competition.” It is chambered in 9mm or .40 S&W and ready for a match right out of the box. The X-5 has been upgraded with every feature a boy could want: a five-inch match barrel, flat trigger, fully adjustable sights, detachable flared magazine well, integrated grip weight,  extended beavertail, undercut trigger guard, extended slide catch lever and optic ready.

I got the 9mm model and I am not disappointed. The gun looks great, the slide has three lightning cuts on top and grasping grooves in the slide that are straight and aligned with the grip angle. To top it all off, each P320 X-Five includes four (4) 21rd steel magazines. It comes in a nice foam fitted Sig pistol box.

I wanted the P320 X-Five 9mm because it incorporates all of the features I wanted to maximize accuracy, and ergonomics while maintaining the modularity of the P320 platform. You can buy a cheap gun ad up grade it, but you never know if the parts are going to work well together. The X-Five is ready on arrival.

The X-Series grip module has a deep trigger guard undercut, a high back strap and an extended beavertail which combined with the flared mag well exactly form to my hand. This gives me a  high grip for great recoil management. The removable grip weight lets me tweak the balance to exactly where I want it.

The X-Five has a straight trigger that helps the shooter get a consistent set and press. It breaks at 90 degrees for an even better feeling pull. Dawson Precision® Fiber Optic sights are my favorite. The colored post draws the eye and the wide rear notch lines up fast and provides a very precise picture. The rear sights are fully-adjustable. As if that wasn’t good enough, there is more. The X-Five pistol is optics-ready right out of the box. The rear sight plate can be removed as a unit and replaced with a ROMEO1 red dot optic.


CALIBER  9mm Luger
SLIDE MATERIAL  Stainless Steel
BARREL MATERIAL  Stainless Steel
TRIGGER  Striker
TRIGGER TYPE  X-Series Straight
BARREL LENGTH  5 in (127 mm)
OVERALL LENGTH  8.5 in (216 mm)
OVERALL WIDTH  1.6 in (41 mm)
HEIGHT  5.8 in (147 mm)
WEIGHT  35.6 oz (1 kg)