SIG Sauer P365-AXG Legion Review: All-Steel Micro-9mm With Elite-Level Accuracy

The SIG Sauer P365-AXG Legion delivers sub-1-inch accuracy at 10 yards and a trigger pull most competitors can’t match. We tested it fully. Here’s the verdict.

The SIG Sauer P365-AXG Legion is a compact 9mm carry pistol built entirely from stainless steel and already one of the most feature-rich handguns in the premium pistol category.

But when I opened the case on the review unit SIG Sauer had sent over, I found they'd also included a Romeo-X red dot mounted on the slide and a Foxtrot2R weapon light on the rail—neither of which is standard with the pistol.

Not wanting to be ungrateful, I shot the P365-AXG as outfitted—and I'm damned glad I did. Here's why.

Hook & Barrel reviews the Sig Sauer P365-AXG Legion.

SIG P365-AXG Legion Accuracy: Sub-1-Inch Groups at 10 Yards

At my outdoor range, I shot the P365-AXG Legion at 10 yards from a rest and at five and seven yards offhand, using a variety of range and self-defense 9mm ammunitions.

I started at 10 yards and zeroed the red dot. My very first group, shot with range ammunition, came in just over one inch wide but was clustered an inch to the right. A small wrench (provided) to the controls shifted my bullet strikes to the correct spot.

At 10 yards, my very best five-shot groups were a pair at .90 inches and one at just .70 inches. These were shot with SIG’s Elite Defense 9mm loaded with a 115-grain V-Crown bullet.

Shooting offhand at five yards, I pegged two groups of 1.2 inches with Hornady’s Critical Defense rounds and a 1.0-inch group using Sig’s range ammo.

The P365-AXG Legion matched up well with Winchester’s USA Ready 9mm, scoring groups of .70- and 1.0-inches at seven yards.

I shot larger groups, of course. Those were because I’d pulled a shot due to sloppy finger placement of the trigger or just generally losing concentration. But the P365-AXG Legion itself? One dead-on accurate pistol.

Stainless Steel Construction, Optics-Ready Slide and Recoil Mitigation

Stainless steel is the P365-AXG Legion's foundation: frame, barrel, slide, all stainless.

This not only promises durability and rust prevention but also provides a nice weight and balance in hand.

The pistol’s custom G10 Grips were cut from aluminum and firmly contacted my hand throughout shooting.

The slide featured an optics-ready cut, easily accessed by removing a couple of screws from the rear plate. Not into optics? The pistol comes standard with SIG’s XRay3 Day/Night Sights, which pops well.

An interesting feature is the pistol’s two-port integrated expansion chamber designed for recoil mitigation.

Several newer semi-automatics have cuts or ports at the end of the slide and barrel to siphon off gases. This helps to push down the end of the barrel somewhat. Same idea here.

What SIG Sauer added, though, was the expansion chamber—a space under the ports wider than the bore.

According to SIG, while actual recoil reduction is ammunition-dependent, some of the 9mm brands they used in the P365-AXG Legion's testing saw up to a 25-percent reduction in recoil.

SIG P365-AXG Trigger, Ergonomics and Premium Price Point

The pistol’s striker-fired trigger averaged two pounds, and two ounces of pull.

The trigger had nearly three-tenths of an inch of take-up before engaging the striker mechanism. From here, the pull was even, the wide-faced trigger making the operation fairly smooth.

The P365-AXG Legion also featured an extended slide stop and ambi-mag release, plus a beveled mag well for easier magazine insertion.

This is a classy-looking pistol. SIG’s signature Legion Gray finish on the slide and frame is set off by a muted black finish on the grips.

The SIG is sold with three 17-round magazines for a 17+1 ammo capacity in what is still a pretty compact unit.

But at the same time, the P365-AXG Legion is expensive. Despite an MRSP of $1,199, you are unlikely to find the handgun for less than $1,299.

A person could buy 2.5 poly-framed 9mms for that money. So, for the equivalent of 2.5 less expensive guns, what can you expect?

Well, first off, any handgun crafted from stainless steel should see many thousands of rounds of use. It's an extremely accurate pistol. And a very handsome firearm that feels better in hand than any poly-framed semi-auto I’ve ever used.

Is the SIG P365-AXG Legion worth the premium price tag? For anyone who shoots regularly and carries daily, yes: without hesitation. The all-stainless build, sub-1-inch accuracy and Legion-grade fit and finish put it in a different class from polymer-framed alternatives at half the price.

It looks good, fires better, and has the design, build, and materials to last well beyond your current every day 9mm carry.