SIG Sauer P220 X-Six Mastershop Multi-Caliber Set

Three uppers, one frame, three calibers, all built in Eckernförde by SIG's Mastershop. That's the pull here. Most P220 X-Six pistols turn up alone in .45 ACP. This one arrives with its factory 9mm and .22 LR Wechselsystem kits, every upper sharing the same parent frame and carrying the matched G531 314 lineage stamped across the slides and the boxes.

The base pistol is the .45 ACP X-Six. Matte stainless slide and frame, a 6 inch precision barrel, and the long sight radius that gives the X-Series its reputation on the line. The walnut target grips wear the SIG Sauer logo and a palm shelf shaped for a high competition hold. The single action trigger breaks the way a tuned Mastershop gun should, and the adjustable target rear sight pairs with a post front for a clean sight picture. The slide reads P220 S and 45 Auto along the flat.

The 9mm Wechselsystem matches the host in matte stainless with its own 6 inch barrel. Drop it on and the gun softens up, lighter recoil and faster splits without losing the balance of the .45 setup. The third upper is the .22 LR conversion in matte black, the slide marked SIG Sauer 22LR, built for cheap practice and trigger time that mirrors the centerfire feel.

Everything is here. Three factory boxes labeled for each caliber, the P220 X-Six manuals and the .22 LR instruction sheets, factory test targets, the SIG grease tube, magazines for all three systems, and the original cases. The pistol and the kits show as new with the factory STOP tag still tied to the trigger guard.

For a SIG collector chasing the Mastershop era, a matched three caliber X-Six set like this is the kind of thing that anchors a shelf. You're getting one serialized family of uppers, not a pile of mismatched parts assembled after the fact.