Sig Sauer P320 AXG Legion 9mm Pistol – Optic-Ready Compensated X-Series, 3.9" Barrel, 21+1 Capacity
The P320 AXG Legion distills Sig Sauer’s flagship X-Series performance into a Legion-gray, aluminum-framed carry pistol that ships with an integral two-port compensator and an optic-ready slide. Its flat-faced skeletonized trigger, alloy grip module with extended beavertail, and flared removable magwell give shooters a refined, competition-inspired feel in a duty-sized package.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: This pistol shows only minimal signs of use, limited to a few light handling marks.
What’s Included
- (1) 21-round SIG Sauer steel magazine (extended)
- (2) 17-round SIG Sauer steel magazines (flush-fit)
- SIG Sauer factory plastic hard case (gray)
- SIG Sauer P320 operator's manual
- Original takedown lever
The slide is machined from stainless steel, finished in Legion-gray Cerakote, and cut with aggressive front and rear serrations. A removable plate allows direct mounting of popular micro red-dot optics while XRAY3 tritium sights provide a vivid day/night sight picture right out of the box.
An integral expansion-chamber compensator is cut directly into the slide, venting gas through two forward ports to mitigate muzzle rise without adding length or threaded parts. Combined with the 3.9-inch non-threaded barrel, it delivers full-size control in a compact profile.
The AXG grip module is precision-milled from 7075-T6 aluminum and wears textured G10 grip panels for a firm, repeatable purchase. A flared, removable magwell speeds reloads, while the extended beavertail manages recoil and protects the shooter’s hand.
Controls are fully ambidextrous where possible: the slide catch is bilateral, and the magazine release reverses without tools. The serialized stainless Fire Control Unit drops into the alloy frame, allowing caliber or grip conversions that maintain the pistol’s legal identity.
Three factory magazines—one 21-round and two 17-round—give the pistol a combined on-board capacity of 55 rounds. All are genuine SIG steel mags engineered for reliable feeding with 9mm Luger ammunition.