SIG SAUER Custom Works P226 XFIVE Reserve 9 mm – Limited-Edition, Optic-Ready, Single-Action Performance Pistol
Built by SIG SAUER Custom Works for the 40th anniversary of the P226, the P226 XFIVE Reserve is a full-size, single-action-only pistol produced in a run of fewer than 3,000 units worldwide. Its mirror-polished black DLC finish, three-way-adjustable AX3 trigger, and PRO-footprint optic-ready slide place it at the top of SIG’s new Reserve Collection. Collectors and shooters looking for a factory-tuned, competition-capable P226 will find this model notable for its limited availability and premium build quality.
Condition
Overall Condition: Excellent – showing only faint signs of prior use or handling.
Bore Condition: Excellent – clean, mirror finish, no signs of wear.
Rifling Condition: Excellent – sharp lands and grooves.
What’s Included
- SIG SAUER P226 XFIVE Reserve owner’s manual
- Fully-adjustable square-notch rear sight (installed)
- 3 factory 20-round SIG SAUER steel magazines with extended alloy base pads
- SIG Custom Works lockable hard case
- SIG Custom Works challenge coin
The P226 XFIVE Reserve is the inaugural model in SIG’s Reserve Collection launched in 2024. Each pistol carries a high-polish DLC finish over stainless steel, accented by a Custom Works crest on the slide and a German “Stanz 13” proof on the barrel.
The single-action-only AX3 trigger offers flat-face geometry and three-way adjustment for pull weight, take-up, and over-travel, allowing the shooter to fine-tune feel without aftermarket parts. A skeletonized spur hammer complements the trigger system.
The slide is optic-ready with SIG’s PRO footprint and front/rear cocking serrations. The design allows co-witness with suppressor-height X-RAY 3 sights if installed, while the factory setup ships with a green fiber-optic front and fully adjustable rear iron sights.
A stainless-steel frame provides weight and rigidity, enhanced by an extended beavertail, flared magazine well, and black GridLOK alloy grips for a secure purchase. An accessory rail accepts weapon lights or lasers.
With fewer than 3,000 examples produced, factory high-end features, and direct lineage to the competition-proven P226 XFIVE, this Reserve-edition pistol represents a collectible yet range-ready addition to any serious SIG collection.



