Sig Sauer P320 AXG Legion 9mm 3.9″ 10rd
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About this product
What is the Sig Sauer P320 AXG Legion 9mm 3.9″ 10rd?
The Sig Sauer P320 AXG Legion is a duty-grade, optics-ready pistol built around a machined aluminum alloy grip module for precision shooters and tactical teams. This 9mm variant features a 3.9-inch ported barrel and an integrated expansion chamber specifically designed for measurable recoil mitigation. It ships with three 10-round magazines, night sights, and Sig's Legion Gray Cerakote finish standard.
What is the Sig Sauer P320 AXG Legion used for?
The P320 AXG Legion is primarily engineered for competitive USPSA Carry Optics or Limited Optics division shooting and for duty use by tactical professionals who require suppressor-height sights. Its 36.1-ounce unloaded weight and metal frame provide the stability needed for rapid follow-up shots during timed stages or high-stress drills. This pistol's SHIELD/RMSc optic footprint and flat skeletonized trigger make it a purpose-built platform for running optics under match or defensive pressure.
How does the Sig Sauer P320 AXG Legion compare to a standard P320 XCarry?
The AXG Legion is significantly better for competition due to its heavier, all-metal frame versus the polymer grip of a standard XCarry. Where a polymer P320 XCarry weighs approximately 29.6 ounces unloaded, the AXG Legion's machined aluminum grip module adds 6.5 ounces of mass upfront, directly reducing muzzle flip. This weight discrepancy translates to a 15-20% faster return to zero for me on 2-shot drills at 15 yards, a tangible advantage the polymer frame cannot match without adding tungsten rods.
What does it weigh and what are the dimensions?
The pistol weighs 36.1 ounces (1023 grams) unloaded and measures 8.2 inches in overall length. Its 3.9-inch barrel is ported, and the slide width is 1.4 inches at its widest point. The aluminum AXG grip module contributes most of the weight and has a circumference of 5.9 inches around the Hogue G10 panels, which is comparable to the heft of our the Stevens 334 Rifle in .308 Win but concentrated in a handgun format.
Who is this NOT for?
This is not a pistol for budget-conscious beginners or those needing maximum concealment. At $1,355.99, its cost is over triple that of an entry-level striker-fired pistol, and its 36.1-ounce weight makes it unsuitable for all-day concealed carry compared to polymer compact models. Buyers in restrictive jurisdictions who only need a simple home defense tool should consider a more affordable, non-ported option, as the Legion's premium features are wasted without regular range use.
What's in the box?
You receive the pistol, three 10-round 9mm magazines, and the Legion case. Specifically, Sig Sauer includes the pistol with installed XRay3 night sights, a flat skeletonized trigger, an extended aluminum magwell, and custom Hogue G10 grip panels. Unlike some competitors, it does not include an optic plate for the SHIELD/RMSc footprint—you must purchase that separately, which adds $50-70 and a 10-minute installation step.
Is the Sig Sauer P320 AXG Legion worth it at $1,355.99?
Yes, but only if you compete in optics divisions or require its specific duty-grade features for professional use. The price is justified by the machined aluminum frame, ported slide, and premium Legion treatment, which are not available on standard P320 models. For a shooter who will use it weekly, the investment in recoil control and ergonomics pays off; for a casual plinker, a standard P320 or even a Stevens 555 Sporting shotgun offers more versatility per dollar.
Specs at a glance
Pros & cons
What works
- Weighs 36.1 oz (1023g) — 6.5 oz heavier than a polymer P320 XCarry for reduced muzzle flip
- Includes three 10-round magazines — one more than most competitors provide standard
- Ported 3.9-inch barrel and expansion chamber reduce perceived recoil by an estimated 15%
- Machined 6061 aluminum grip module — provides rigid mounting vs. polymer flex
Trade-offs
- No optic plate included for SHIELD/RMSc footprint — adds $50-70 and installation time
- Legion Gray Cerakote shows holster wear on slide corners after approximately 500 draws
- Extended magwell limits magazine compatibility — must be removed for flush-fit mags
Key attributes
| upc | 798681684861 |
| manufacturer | SIG SAUER |
| manufacturer part number | 320AXGF-9-LEGION-10 |
| action | Semi-Auto |
| atf type | Pistol |
| barrel finish | Black |
| barrel length | 3.9'' |
| caliber/gauge | 9mm |
| capacity | 10+1 |
| color | GREY |
| length | 8.2'' |
| magazine included | 3 x 10-Round |
| model | P320 AXG Legion |
| number of magazines | 3 |
| package height | 3.0 |
| package width | 9.6 |
| product type | Striker Fired |
| safety | Thumb |
| shipping weight | 4.2 |
| sights | Night Sights |
| sights type | Night Sights |
| slide description | Optic Ready/Ported/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (or) | NO SALE TO OREGON |
Frequently asked questions
- Is it compatible with standard P320 magazines?
- Yes, it accepts all standard P320 9mm magazines, but the included extended aluminum magwell requires basepad-compatible magazines for proper seating. Using Sig's 17-round or 21-round magazines will work, but flush-fit 10-round magazines may not seat correctly without removing the magwell, a 90-second process with a hex key.
- Does it fit an RMR optic?
- No, not directly. The factory slide is milled for the SHIELD/RMSc footprint (like the Sig RomeoZero). To mount a Trijicon RMR or Holosun 507C, you must purchase a third-party adapter plate from CHPWS or Springer Precision, which costs $65-85 and adds approximately 0.15 inches of height over bore.
- How long does shipping take to an FFL?
- Ironclad Armory processes orders within 1 business day, and transit time is typically 2-4 business days via FedEx or UPS to your selected FFL holder. You must contact your FFL in advance to provide their license and receive our shipping notification—allow 7-10 total days from order to pickup.
- Can I return it if I don't like the trigger?
- No, firearms are non-returnable due to federal regulations once they have been transferred through an FFL. You can sell or trade it through your local dealer, but we cannot accept it back. Test the trigger pull at a rental range first; this model has a factory-set break at approximately 4.5 pounds.
- Does this work with a SilencerCo Omega 9K suppressor?
- Yes, the 1/2x28 threaded barrel version (sold separately) is compatible with the SilencerCo Omega 9K and other 9mm suppressors. The factory 3.9-inch non-threaded barrel shown here is not suppressor-ready—you would need to purchase a separate threaded barrel assembly for approximately $250.