SIG Sauer P320 AXG Legion ROMEO-X Pro 9mm 3.9in

The SIG Sauer P320 AXG Legion ROMEO-X Pro is a duty-grade variant of the P320 platform built around the AXG (Alloy X Grip) module and a slide-integrated expansion chamber intended to reduce muzzle rise. It ships optic-ready with a ROMEO-X reflex sight and XRAY3 day/night sights, and features aggressive front and rear slide serrations and a two-port compensated slide. The pistol uses a 3.9-inch barrel and a 10-round magazine capacity, with Legion Gray Cerakote finish and an XSeries flat skeletonized trigger.

Key Specifications

• Caliber is 9mm.
• Barrel length is 3.9 inches.
• Magazine capacity is 10 rounds.
• Includes a ROMEO-X reflex sight.
• Finish is Legion Gray Cerakote.
• Weight with magazine is 36.2 ounces.
• Overall length is 8.2 inches.
• Sights are XRAY3 day/night.
• Slide includes a two-port slide with an integrated expansion chamber and aggressive serrations.
• Trigger is a flat skeletonized XSeries trigger.

Engineered for shooters who prioritize a duty-grade build and optics-ready versatility, the P320 AXG Legion ROMEO-X Pro pairs Legion-specific ergonomics with a compact 3.9-inch platform. Its combination of compensated slide geometry, XRAY3 sights and included ROMEO-X reflex optic makes it well suited for range work and systems-focused shooters who value refined controls and high-quality finishes.