Sig Sauer P320 AXG Legion 9mm 3.9" 10rd Romeo-X Pistol

The P320 AXG Legion drops Sig's modular fire control unit into an all metal grip module. Weight goes up, muzzle rise comes down, and the gun starts feeling less like a polymer service pistol and more like a steel target gun that happens to have a P320 trigger in it. Hogue custom G10 grip panels and an installed magwell come standard on the AXG module, and the flat skeletonized trigger is the one Legion buyers expect at this point.

The slide has a two port expansion chamber machined into the top, which bleeds gas upward and holds the front sight down through recoil rather than letting the muzzle climb and settle. A Romeo-X Pro optic mounts to it. This is the 10rd configuration, so it stays workable in states that cap magazine capacity without giving up anything else the Legion line offers. The 3.9" barrel keeps overall length in carry territory, and the rest is standard P320: same controls, same manual of arms, same enormous holster and accessory market. Legion has always been Sig doing the work a custom shop would otherwise bill for, and the all metal frame is the clearest example of it.