SIG Sauer P320-AXG Legion 9mm RXX Package with ROMEO X Pro, 3.9" Compensated Barrel, 21-Round Mags
The P320-AXG Legion brings SIG Sauer’s prestigious Legion treatment to the striker-fired P320 platform, pairing an all-metal AXG grip module with an integral two-port compensator and factory-installed ROMEO X Pro red-dot optic. This full-size 9 mm pistol delivers fast follow-up shots, premium Legion-Gray Cerakote finish, and an exclusive owner program that adds collector appeal.
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: Minimal handling marks are present; the bore remains bright and spotless.
What’s Included
- SIG Sauer factory hard case (gray polymer, molded SIG logo)
- Three steel 21-round magazines with red followers
- LEGION SERIES owners booklet
- SIG Sauer safety instructions & warranty manual
The AXG (Alloy XSeries Grip) frame is CNC-machined from 7075-T6 aluminum, giving the pistol added weight for flatter shooting and faster return to target. Hogue G10 grips with chevron-stipple panels and an extended magwell provide secure, competition-ready control.
A 3.9-inch carbon-steel barrel ends in a two-port expansion-chamber compensator that is machined integral to the slide, reducing muzzle rise without increasing overall length. Combined with the Legion’s additional slide mass, the system keeps the dot steady during rapid strings.
The optics-ready slide wears a Legion-Gray Cerakote Elite finish and aggressive cocking serrations. It is cut to accept multiple footprints, and ships with SIG’s ROMEO X Pro 1× red-dot, giving shooters an enclosed-emitter sight that co-witnesses with the X-RAY3 tritium front sight and black serrated rear.
Inside, the striker-fired module features a skeletonized X-Series flat-faced trigger that breaks at approximately 4.5 lb. The serialized fire-control unit allows caliber or frame swaps within the P320 family, while Legion-exclusive coatings and quality control enhance durability.
Legion ownership grants access to SIG’s exclusive accessories, range events, and training opportunities, adding long-term value for collectors and serious shooters alike.