SIG Sauer P211 GTO 9mm, 2011-Style SAO, 4.2 in Bull Barrel, Nitron, MACH3D Comp, 21+1, 3 Magazines
The SIG Sauer P211 GTO is SIG's first production 2011-style pistol, introduced in 2025 and built in the United States. This 9mm, single-action-only pistol pairs a stainless steel, Nitron-finished frame with a tri-top slide that integrates SIG's MACH3D compensator. It accepts SIG P320-pattern double-column magazines and comes with three 21-round mags, matching case label, and a factory QC target dated November 14, 2025.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The chamber is clean. The bore is bright throughout. Light evidence of prior handling is present.
What’s Included
- SIG SAUER factory hard case with matching end label (211F-9-GTO)
- Factory test/QC target (matching serial)
- SIG MACH3D factory compensator (installed)
- Aluminum flared magazine well (installed)
- G10 GTO grip panels (installed)
- Upgraded guide-rod spring
- 3x 21-round magazines
Built on a 1911-based, double-stack platform, the P211 GTO is a recent-release, 2011-style design with a stainless steel receiver and Nitron finish on both frame and slide. The bull barrel measures 4.2 inches. Factory specs list overall length at approximately 8.5 inches, height about 5.25 inches, and unloaded weight around 45.9 ounces.
The tri-top slide features forward and rear serrations, a top lightening window, and a slide-integrated MACH3D compensator with top and side ports. It uses SIG's SIG-LOC PRO optics interface with multi-footprint compatibility. A fiber-optic front sight is installed; the rear sight is not installed and the optics cut is exposed.
Controls are single-action-only with an ambidextrous thumb safety, grip safety, and a firing-pin safety. The trigger is a skeletonized, flat-faced unit with an adjustable overtravel screw, paired with a skeletonized spur hammer for a crisp manual-of-arms.
The modular alloy grip includes a removable, flared aluminum magwell, textured G10 panels, and checkering on the front strap and mainspring housing. A full-length dustcover with a three-slot accessory rail provides mounting space for lights or other rail accessories.
The pistol accepts SIG P320-pattern steel double-stack magazines and ships with three 21-round mags (one shown with an extended basepad). Documentation includes a factory QC target dated 11/14/2025 at 15 m and a case label dated 17-NOV-2025, both matching the pistol.