SIG Sauer P211-GTO RXSL 9mm Double-Stack 1911, 4.4 in Bull Barrel with MACH3D Compensator, ROMEO-X, 21+1, Nitron
The P211-GTO RXSL is a 2025, USA-made, double-stack 1911 that pairs a 4.4 in bull barrel with a SIG MACH3D slide-mounted compensator and a factory-installed SIG Sauer ROMEO-X optic. It offers 21+1 capacity using P320-pattern magazines, a stainless-steel slide and main frame with Nitron finish, XRAY3 Day/Night sights on the SIG-LOC PRO interface, and a full-length dust cover with a 3-slot 1913 Picatinny rail.
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: There is mild carbon buildup.
What's Included
- SIG Sauer factory hard case
- SIG Sauer ROMEO-X red-dot sight (installed)
- Three 21-round steel P320-pattern magazines
- Recoil spring
- Paperwork
- Test target
This P211-GTO RXSL uses a double-stack 1911 architecture with single-action-only operation and 1911-type controls. Capacity is 21+1, and the pistol accepts P320-pattern magazines. A flared, removable magazine well speeds reloads while maintaining compatibility with the supplied 21-round steel magazines.
The 4.4 in bull barrel is paired with SIG’s MACH3D 3D-printed, slide-mounted compensator. The slide is cut with front, rear, and long top serrations for confident manipulation, and it rides over a full-length dust cover that integrates a 3-slot 1913 Picatinny rail.
The RXSL package includes a factory-installed SIG Sauer ROMEO-X optic and XRAY3 Day/Night sights on the SIG-LOC PRO interface. The front sight is a green-dot blade, providing a clear, bright aiming reference in varied lighting.
Construction centers on a stainless-steel slide and main frame with a Nitron finish, paired with an alloy grip module wearing textured G10 grip panels. Controls include ambidextrous thumb safeties, a grip safety, and a firing pin safety. A flat, skeletonized trigger completes the SAO fire control setup.
Approximate dimensions are 8.5 in long, 1.48 in wide, and 5.25 in high, with an unloaded weight of about 45.9 oz. This example is the 2025 production configuration, identified by mfg part number 211F-9-GTO-B-RXSL and finished in Nitron throughout.