The Legion Series from Sig Sauer is making a powerful return to its duty-grade roots with the launch of the P320-AXG Legion, deSigned to redefine the shooting experience. Combining the strength and substantial weight of the all-metal AXG grip module with a revolutionary, patent-pending slide-integrated expansion chamber, the P320-AXG Legion delivers up to 25% recoil reduction for unmatched control and accuracy. This new addition to the Legion line-up upholds Sig Sauer’s legacy of peak performance and engineering excellence. The P320-AXG Legion features the iconic AXG (Alloy X Grip) all-metal grip module, finished in the distinctive Legion Gray Cerakote Elite, offering a sleek, professional look and rugged durability. Fitted with exclusive custom Legion Hogue G10 grips and an extended magwell, this pistol ensures fast and easy reloads, making it an ideal choice for competitive shooters and tactical professionals alike. Ready for modern optics, the P320-AXG Legion accommodates the Sig Sauer ROMEO1Pro, ROMEO2 red-dot optics, as well as the Deltapoint Pro and Trijicon RMR, allowing shooters to customize their setup to meet any need. Enhanced with aggressive front and rear slide serrations, this pistol offers intuitive handling for quicker, more efficient manipulations. Whether you’re looking for precision, performance or power, the P320-AXG Legion is built to exceed expectations in every aspect.

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SIG SAUER P320 AXG LEGION W/ ROMEO-X OPTIC – 9MM – LEGION GRAY CERAKOTE – 21RDS (320AXGF-9-LEGION-RXX)

Redefining Precision, Performance, and Tactical Supremacy

The SIG SAUER P320 AXG LEGION W/ ROMEO-X OPTIC – 9MM – LEGION GRAY CERAKOTE – 21RDS, also known by its SKU 320AXGF-9-LEGION-RXX, is not just another striker-fired pistol. It is a representation of SIG SAUER’s most elite firearms engineering, bringing together the tried-and-true P320 platform, the aesthetic excellence of the LEGION series, and the performance-boosting advantage of an integrated ROMEO-X red dot optic. Whether you’re a competitive shooter, a tactical operator, or a serious firearms enthusiast, this premium handgun delivers unrivaled balance, accuracy, and control straight out of the box.

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Key Features at a Glance

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• Caliber: 9mm

• Capacity: 21 rounds

• Finish: Legion Gray Cerakote

• Frame: Alloy XSeries (AXG) metal frame

• Slide: Optic-ready, Nitron-finished stainless steel

• Optic: Factory-installed ROMEO-X red dot

• Trigger: Flat XSeries skeletonized trigger

• Magazines: (3) 21-round steel magazines included

• Sights: XRay3 Day/Night Suppressor Height Sights (co-witness with optic)

• Weight: ~36.1 oz (loaded)

• Model Number: 320AXGF-9-LEGION-RXX

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Built on the AXG Metal Grip Module – Elite Ergonomics and Stability

At the heart of the P320 AXG LEGION lies SIG SAUER’s AXG (Alloy XSeries Grip) module — a CNC-machined aluminum frame that offers a robust and rigid shooting platform. Unlike standard polymer frames, the AXG grip provides superior recoil mitigation, enhanced balance, and an unmistakably premium feel in the hand. The texturing on the custom G10 LEGION grip panels and backstrap is aggressively engineered for positive control under any condition—sweat, rain, or gloves.

For shooters seeking a perfect union of modern modularity and traditional craftsmanship, the AXG frame sets the standard. The aluminum build mimics the weight and feel of full-sized duty pistols, helping reduce muzzle flip and promote faster, more accurate follow-up shots.

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Factory-Installed ROMEO-X Red Dot – Tactical Clarity and Rapid Target Acquisition

This P320 AXG LEGION configuration includes a ROMEO-X red dot optic, precision-mounted directly to the slide. The ROMEO-X is engineered with military-grade durability and crystal-clear optics. The ultra-low profile ensures co-witnessing with the suppressor-height XRay3 night sights, providing redundancy and backup in case of electronic failure.

Features of the ROMEO-X Optic:

• 3 MOA red dot for fast, precise aiming

• Motion-activated illumination (MOTAC)

• Multiple brightness settings for day or night use

• Aspheric glass lens with zero distortion

• Aluminum housing, waterproof and shockproof

Whether you’re training for competition or responding to a threat, the ROMEO-X ensures rapid target acquisition with minimal eye strain—making this a powerful optic-ready platform from factory.

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Flat Skeletonized XSeries Trigger – Predictable, Crisp Break

The skeletonized flat-face trigger used in the AXG LEGION is among the most refined iterations of SIG’s striker-fired trigger system. The break is crisp, the reset is short, and the tactile feedback is consistent. The geometry of the flat trigger allows for a lower trigger pull weight and improved finger placement, making every shot feel smoother and more predictable.

This isn’t just about comfort—it’s about enhancing your shooting performance under pressure.

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Legion Gray Cerakote Finish – Tactical Aesthetics with Durability

The Legion Gray Cerakote finish applied to both the slide and the AXG grip module doesn’t just look menacing—it also provides superior corrosion resistance, hardness, and abrasion protection. Cerakote is a premium ceramic-based coating known for its ability to withstand harsh conditions, sweat, solvents, and repeated holstering.

Combined with the sleek, signature LEGION branding, this finish gives the P320 AXG LEGION its unmistakable, mission-ready look.

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Fully Modular P320 Platform – Adapt to Every Mission

Like all P320 series pistols, the AXG LEGION is modular, meaning the serialized Fire Control Unit (FCU) can be removed and swapped into various grip modules, calibers, and barrel lengths. This platform is compatible with SIG SAUER’s wide ecosystem of parts and upgrades, including:

• Compact or full-size slides

• Different optics mounts

• Threaded barrels

• Alternative trigger modules

• Custom grip modules from Wilson Combat, Icarus Precision, and more

With this level of flexibility, you can configure your AXG LEGION into a concealed carry piece, competition rig, or duty weapon—all using the same serialized core. sig sauer

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Complete Tactical Package – What You Get

When you purchase the SIG P320 AXG LEGION W/ ROMEO-X, you’re not just buying a pistol—you’re receiving a complete tactical package designed for immediate performance:

• (3) 21-round magazines: Steel body, high-visibility followers

• ROMEO-X Red Dot Optic: Installed and zeroed at factory

• XRay3 Suppressor-height sights

• AXG LEGION Case: Foam-padded and branded

• LEGION Membership Access: Get exclusive access to Legion gear, apparel, training videos, and member-only events

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Field-Tested and Duty-Proven

SIG SAUER firearms have served in elite military and law enforcement units globally. The P320 platform, specifically, has been adopted as the M17 and M18 by the U.S. Armed Forces, proving its reliability and combat-readiness. The AXG LEGION is the evolution of this battle-tested platform, refined for civilian excellence.

In stress tests, this pistol maintains sub-MOA groupings at 25 yards, minimal shift in point of aim even with extended suppressors, and over 20,000 rounds without performance degradation.

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Ideal For:

• Competitive Shooting

• Concealed Carry (With Proper Holster)

• Home Defense

• Tactical Operations

• Law Enforcement Backup Weapon

• Collectors of Legion Series Firearms

• Range Enthusiasts Seeking Top-Tier Performance

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Why Choose the SIG P320 AXG LEGION Over Other 9mm Pistols?

In a crowded market of striker-fired 9mm pistols, the SIG SAUER P320 AXG LEGION W/ ROMEO-X stands apart due to its all-metal frame, premium optics, Legion craftsmanship, and out-of-the-box tactical readiness. It offers a refined shooting experience that polymer pistols often can’t match, especially when rapid follow-up shots, sustained recoil control, and elite aesthetics are priorities.

Other pistols may try to imitate the P320’s modularity or optics readiness, but few can compete with the engineering precision, reputation, and real-world performance history of the P320 LEGION series.

SIG P320 AXG LEGION

SIG P320 AXG LEGION

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Conclusion: The Ultimate All-Metal, Optic-Ready Pistol Experience

The SIG SAUER P320 AXG LEGION W/ ROMEO-X OPTIC – 9MM – LEGION GRAY CERAKOTE – 21RDS (320AXGF-9-LEGION-RXX) isn’t just a premium pistol. It’s a complete weapon system tailored for shooters who demand the highest standards in reliability, speed, ergonomics, and precision.

SIG P320 AXG LEGION

SIG P320 AXG LEGION

From the battle-proven P320 modular FCU to the exclusive Legion features and cutting-edge red dot optic, every detail of this pistol is meticulously designed to give you the upper hand—whether on the range, in competition, or in defense of life. sig legion 9mm