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Grand Power is a Slovakian company that doesn't get nearly the attention it deserves in the US market, and the X-CALIBUR MK23 is probably the best example of why that's a shame. This is the brand's flagship pistol, purpose-built for competition and precision range work, and it does things differently than just about everything else out there. The key is the rotating barrel system. Instead of the barrel tilting down during the firing cycle like virtually every other semi-auto on the market, it rotates on its own axis to unlock from the slide. The result is a lower bore axis, a non-impact lockup, and a recoil impulse that feels dramatically softer than any comparable 9mm. People who shoot it for the first time are genuinely surprised.
The trigger is another standout. It's a hammer-fired DA/SA setup with a short reset and a single-action pull that has been compared to a well-tuned 1911. The double-action is there as a backup if needed, but most range sessions will be spent in single-action, where the trigger is crisp and predictable in a way that lets you focus entirely on the shot. The Mk23 generation also brought a redesigned slide with more aggressive cocking serrations and lightening cuts throughout, which keeps the reciprocating mass manageable while giving the slide a distinctive, purposeful look. The optic cut and included mounting plates for Vortex/Docter Noblex, Trijicon RMR, CMORE STS2, and Shield SMS make this one of the more practical optics-ready platforms at this price point.
Factory sights are a red fiber-optic front paired with a side-adjustable steel Elliason rear, and they're genuinely useful out of the box. The grip frame is polymer over a CNC-machined steel chassis, and it runs significantly deeper in the hand than most pistols, which contributes to the low felt recoil alongside the rotating barrel. Three interchangeable backstraps let you dial in the fit regardless of hand size. The package also includes three 15-round magazines, a hard case, a bore brush, and a trigger lock. Holster availability is more limited than mainstream platforms, so worth factoring in if that matters to your use case. Everything else about the setup, from the fully ambidextrous controls to the included optic plates, is ready to go the moment you take it out of the case.
Most semi-automatic pistols use a tilting barrel to unlock from the slide during the firing cycle, a design that's been standard since John Browning's day. The Grand Power X-CALIBUR uses a rotating barrel system where the barrel spins on its axis to unlock instead of tipping downward. This keeps the barrel in a lower, more consistent position relative to the shooter's hand and produces a noticeably softer, flatter recoil impulse. People who pick this gun up for the first time almost universally comment on how mild it feels compared to other full-size 9mms.
The MK23 ships with four optic mounting plates that cover the most popular footprints: Vortex/Docter Noblex, Trijicon RMR, CMORE STS2, and Shield SMS. That covers a wide range of popular red dots without needing to source an aftermarket plate right away. One thing worth noting is that the included plates are polymer, so pairing them with a quality metal optic is the right call for durability and zero retention.
That's exactly what it was designed for. The X-CALIBUR is Grand Power's flagship competition pistol, featuring a crisp SA/DA trigger with a short reset, fully ambidextrous controls, an adjustable rear sight, and a low-recoil rotating barrel system. It comes with three magazines right out of the box, which is a meaningful advantage when you're setting up for a match. It works well for USPSA and similar practical shooting sports where a hammer-fired, optics-ready platform with a refined trigger is a real asset.
Yes. Three interchangeable backstraps are included in the box, allowing you to customize the grip circumference to fit your hand. This is a feature Grand Power includes across their lineup, and it makes a meaningful difference in how the gun fits and points for different shooters. Swapping backstraps is straightforward and doesn't require any tools.
The X-CALIBUR MK23 is a hammer-fired pistol with a single-action primary trigger and a double-action backup. There is no decocker on this model. Most users carry it cocked and locked with the ambidextrous thumb safety engaged, similar to how a 1911 is typically carried. If a round fails to fire, the double-action mode lets you attempt a re-strike without manually cycling the slide, which is a useful safety net in a competition context.
Holster availability for Grand Power pistols is more limited than mainstream platforms like Glock or SIG, and that's worth knowing before you buy. Falco, a fellow Slovakian company, makes dedicated leather and Kydex holsters specifically for the X-CALIBUR line with or without a weapon light attached. A handful of domestic makers offer options as well. It's not impossible to find a good holster for this gun, but you may need to source one from a specialty maker rather than picking one up off a local shelf.
| UPC | 8588005808460 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 8588005808460 |
| Action | |
| Barrel Length | 4.8" |
| Caliber/Gauge | 9mm |
| Capacity | 15 + 1 |
| Color | Black |
| Model | |
| Product Type | Double / Single Action |
| Safety | Ambidextrous Thumb |
| Sights | Adjustable Rear Sight & Fiber Optic Front |
| Slide Description | Lightening Cut/Optic Cut/Serrated |
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