Grand Power X-CALIBUR MK23 9mm Pistol, 15+1
About this product
The Grand Power X-CALIBUR MK23 9mm Pistol is an optics-ready double/single-action firearm chambered in 9mm featuring a 15+1 round capacity, designed for competitive shooters who demand mechanical precision and modularity. Manufactured by Slovakian-based Grand Power, this pistol blends the proven X-TRIM platform with modern competitive features like slide lightening cuts and an optics cut. Ironclad Armory currently offers this model at $1,149 with a comprehensive accessory package that includes multiple mounting plates and magazines.
What is the Grand Power X-CALIBUR MK23 used for?
This pistol excels in USPSA Production or Carry Optics division competition and high-round-count range training, delivering consistent performance under rapid-fire conditions. The 15-round magazine capacity meets most division limits while the 4.5-pound single-action trigger break minimizes split times. I recommend it for action pistol sports where shooters need reliable dot tracking and quick slide manipulation—especially with its 2.8-ounce weight reduction from the standard X-TRIM slide.
How does the Grand Power X-CALIBUR MK23 compare to a Stevens 334 Rifle?
The X-CALIBUR outperforms the bolt-action Stevens 334 Rifle in rapid-engagement scenarios but sacrifices long-range precision inherent to rifles. Where the Stevens 334 in .308 Win delivers sub-MOA accuracy at 100 yards with match ammo, the X-CALIBUR’s 4.6-inch barrel limits effective range to 25-50 yards for precision work. For home defense or competitive shooting within 50 yards, the pistol’s semi-auto operation and higher ammunition capacity provide distinct advantages over a bolt-action platform like the Stevens 334.
What does it weigh and what are the dimensions?
Unloaded weight is 29.8 ounces (845 grams) with an overall length of 8.1 inches and height of 5.7 inches including the magazine. The slide measures 1.3 inches wide while the barrel length sits at 4.6 inches—0.2 inches longer than many Glock 17 variants for slightly improved velocity. These dimensions make it legal for most USPSA Production class requirements while remaining manageable for shooters with medium to large hands.
Who is this NOT for?
Concealed carry permit holders should avoid this pistol due to its full-size frame and competition-oriented features. The 8.1-inch overall length and 5.7-inch height make concealment impractical compared to compact options like the Glock 19, while the lightened slide increases perceived recoil for inexperienced shooters. If you need a bedside pistol or want to compete in IDPA Carry Optics, consider a smaller footprint firearm—this model prioritizes range performance over everyday practicality.
What's in the box?
Grand Power includes three 15-round steel magazines, three interchangeable backstraps (small, medium, large), four optic mounting plates, a trigger lock, bore brush, and owner’s manual. The mounting plates cover Vortex/Docter Noblex, Trijicon RMR, CMORE STS2, and Shield SMS footprints—more comprehensive than the single plate included with many competitors. This package saves approximately $150-$200 versus purchasing accessories separately, making the $1,149 price point more competitive against modified Glocks.
Is the Grand Power X-CALIBUR MK23 worth it at $1,149?
At $1,149, this pistol delivers exceptional value for competitive shooters needing an optics-ready platform without aftermarket modifications. Compared to a $600 Glock 17 MOS requiring $200 in milling and $150 in trigger upgrades, the X-CALIBUR comes range-ready with superior out-of-box trigger performance and included mounting options. For hunters or recreational shooters who might prefer a shotgun platform, the Stevens 555 Sporting O/U offers better versatility at lower cost—but for dedicated pistol competition, this Slovakian-made firearm justifies its price through execution.
Specs at a glance
Video review
Pros & cons
What works
- Includes 4 optic plates—saves $150-$200 versus aftermarket purchases
- 29.8 oz unloaded weight—2.8 oz lighter than standard X-TRIM slide
- 4.5 lb single-action trigger—1.5 lbs lighter than stock Glock 17 trigger
- 3 interchangeable backstraps—accommodates hand sizes from 3.5" to 4.5" width
Trade-offs
- No threaded barrel option—cannot mount suppressors without $250 aftermarket barrel
- Slide serrations limited to rear 40%—difficult to press-check without modifying grip
- Polymer frame lacks stippling—requires $60-$100 grip tape or professional stippling for extreme conditions
Expert review
Key attributes
| upc | 8588005808460 |
| manufacturer | Grand Power |
| manufacturer part number | 8588005808460 |
| action | Double / Single Action |
| barrel length | 4.80" |
| caliber/gauge | 9mm |
| capacity | 15 + 1 |
| color | Black |
| model | X-CALIBUR |
| product type | Double / Single Action |
| safety | Ambidextrous Thumb |
| sights | Adjustable Rear Sight & Fiber Optic Front |
| slide description | Lightening Cut/Optic Cut/Serrated |
Frequently asked questions
- Is it compatible with Trijicon RMR optics?
- Yes, the included mounting plate #2 provides direct compatibility with Trijicon RMR footprint optics without adapter plates. Installation requires four 6-32×3/16” screws (included) and typically takes 15-20 minutes with proper torque settings. Ensure your specific RMR model uses the standard footprint—some Holosun models require additional verification.
- Does it fit standard Glock 17 holsters?
- No, the X-CALIBUR’s slide geometry and lightening cuts prevent reliable retention in most Glock 17 holsters. You'll need competition-specific holsters from Bladetech or Comp-Tac designed for Grand Power frames—expect to spend $80-$120 for a suitable kydex option. The frame width of 1.3 inches matches Glock dimensions but the slide profile differs significantly.
- How long does shipping take to Montana?
- Ironclad Armory processes firearms within 3 business days with UPS 2-Day Air shipping to FFL holders. Total delivery time to Bozeman typically runs 5-7 business days after order verification—faster than the 10-day average for most online retailers. All shipments require adult signature confirmation and FFL paperwork completion.
- Can I return it if it doesn't cycle properly?
- Ironclad Armory accepts returns within 30 days for unfired firearms with original packaging, but you must pay a 15% restocking fee and return shipping costs (~$50). If cycling issues persist after 200-round break-in, contact Grand Power's US warranty service in Florida—they typically resolve malfunctions within 14 business days. Most feeding problems stem from magazine-related issues rather than the pistol itself.