Sig Sauer P320 AXG Legion 9mm 3.9" Barrel 10-Round Gray

The Sig Sauer P320 AXG Legion 9mm is a duty-grade striker-fired pistol built for shooters who demand reliability, control, and a refined shooting experience. This full-size XSeries platform combines Sig's modular P320 architecture with a proprietary all-metal grip module and a pair of recoil-reduction features that set it apart from the standard lineup. The 3.9-inch barrel strikes a balance between velocity and practical carry ergonomics, while the Legion Gray Cerakote finish and custom Hogue G10 grips give it a purposeful, professional appearance.

At the heart of the AXG Legion is its aluminum grip module—noticeably heavier and more solid underhand than polymer alternatives—paired with a two-port slide-integrated expansion chamber designed to reduce felt recoil. The result is a 9mm that tracks faster and recovers smoother than you'd expect from a compact-ish pistol. The trigger is Sig's flat, skeletonized XSeries design, which breaks cleanly and resets positively without excess takeup. Sig includes three 10-round steel magazines (two more are sold separately), an M1913 accessory rail, and X-Ray3 day/night sights that illuminate in low light while remaining visible in daylight without a battery.

The optic-ready slide hosts aggressive front and rear serrations for reliable grip during racking and malfunction clearance. Sig engineered the mounting footprint to accept common micro red dots—SIG ROMEO1Pro and ROMEO2, Deltapoint Pro, and Trijicon RMR—so you can set up a duty or competition-ready gun without guesswork. This is a serious pistol for shooters who want modern features, metal construction, and Sig's reputation without the guesswork of aftermarket assembly. The 36.1-ounce weight delivers a planted, stable platform, especially valuable in defensive or high-round-count range sessions.

Key Features

• Full-size XSeries P320 platform with all-metal AXG grip module for weight and durability
• Two-port slide-integrated expansion chamber for recoil mitigation
• Optic-ready slide with integrated mounting footprint for micro red dots
• Aggressive front and rear slide serrations for reliable manipulation
• Flat, skeletonized XSeries trigger for clean breaks and positive resets
• Custom Hogue G10 grips in Legion Gray Cerakote for confident handling
• Extended magwell for fast, efficient magazine changes
• X-Ray3 day/night sights (battery-free night glow, daylight visible)
• M1913 accessory rail for lights, lasers, or vertical grips
• Three 10-round steel magazines included
• Stainless steel slide and carbon steel barrel for longevity

Specifications

Frequently Asked Questions

What red dot optics work with the P320 AXG Legion's optic-ready slide?

The AXG Legion's optic-ready mounting footprint is engineered to accept SIG ROMEO1Pro and ROMEO2 red dots, as well as Deltapoint Pro and Trijicon RMR micro optics. If you're considering a different brand, verify compatibility before ordering.

Is the P320 AXG Legion suitable for duty, competition, or range use?

Yes. The full-size XSeries frame, metal construction, optic-ready slide, aggressive serrations, and included X-Ray3 sights make it a capable platform for duty carry, competitive shooting, or high-volume range sessions. The recoil-reduction chamber and metal grip module enhance control during extended shooting.

What's included in the box?

The P320 AXG Legion comes with three 10-round steel magazines, custom Hogue G10 grips, X-Ray3 day/night sights, and the pistol itself. Additional 10 and 21-round magazines are available separately.

Can I attach a weapon light or laser to the P320 AXG Legion?

Yes. The M1913 Picatinny rail under the dust cover accommodates standard tactical lights, lasers, or other rail-mounted accessories.