Description
The Grand Power P1S MK23 9mm 3.66in 12rd Black is a compact, optics-ready polymer-frame pistol built for concealed carry and everyday use. It pairs a 3.66-inch barrel with a 12-round magazine, a manual thumb safety, and an upgraded locking system for reliable cycling.
| Manufacturer | Grand Power |
|---|---|
| Model | P1S MK23 |
| Material | Polymer frame, steel slide |
| Compatibility | 9mm Luger ammunition |
| Finish | Matte black |
| Weight | 25.6 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Optics-Ready Slide – Comes with multiple footprint baseplates (RMR, Shield, Docter) so you can mount your preferred red dot without extra machining.
- Upgraded Locking System – Uses a rotating barrel with a revised cam track for reduced felt recoil and faster follow-up shots.
- Enhanced Grip Texture – Aggressive stippling on the frontstrap, backstrap, and side panels gives you a locked-in hold even with sweaty hands.
- Manual Thumb Safety – Ambidextrous safety lever lets you carry condition one with confidence, while the firing pin block adds drop safety.
- Compact 3.66-Inch Barrel – Balances concealability with a sight radius long enough for accurate defensive shooting out to 25 yards.
Who It’s For
This pistol is for the shooter who wants an optics-ready carry gun without paying custom prices. If you carry appendix or strong-side and prefer a manual safety, the P1S MK23 gives you that control in a slim, 12-round package. It also suits left-handed shooters thanks to the ambi safety and reversible mag release.
Pros & Cons
- Pro: Optics-ready out of the box with multiple baseplates – saves you $100+ in milling costs.
- Pro: Rotating barrel system reduces muzzle flip compared to a traditional Browning tilt-lock design.
- Con: Aftermarket support is thinner than Glock or Sig – holster and sight options are more limited. You may need to check compatibility before buying accessories.
Comparison
| Feature | Grand Power P1S MK23 | Zev Technologies OZ9 | Agency Arms AOS Glock 19 |
|---|---|---|---|
| Price | $608.27 | $1,200+ | $1,500+ |
| Barrel Length | 3.66 in | 4.0 in | 4.02 in |
| Capacity | 12+1 | 15+1 | 15+1 |
| Optics Ready | Yes (multi-plate) | Yes (ZEV plate) | Yes (Agency plate) |
| Locking System | Rotating barrel | Tilt-lock (modified) | Tilt-lock |
| Safety | Manual thumb + firing pin block | None (trigger safety only) | None (trigger safety only) |
FAQ
What optics fit the Grand Power P1S MK23 slide?
The slide ships with three baseplates: one for Trijicon RMR (and Holosun 407C/507C), one for Shield RMS/RMSc, and one for Docter/Noblex/Vortex Viper. You can mount any of those without an adapter plate.
Is the P1S MK23 compatible with standard Grand Power holsters?
Yes, it fits most Grand Power P1S holsters, but confirm with the manufacturer if you’re using a light-bearing model. The MK23 slide is slightly taller due to the optics cut, but the frame dimensions are identical to the standard P1S.
Does the rotating barrel require special maintenance?
No, you clean and lube it like any other pistol. The rotating barrel uses a cam pin and roller – keep that area lightly oiled. Per Grand Power specs, the locking system is designed for 25,000+ rounds with normal care.
Can I use +P ammunition in this pistol?
Yes, the P1S MK23 is rated for +P 9mm loads. The upgraded locking system and steel slide handle the extra pressure. Stick to standard pressure for range practice and +P for defensive carry.
Trust & Delivery
- ✔ Nationwide delivery – ships to all 50 states
- ✔ Ships 1-2 business days from order
- ✔ 30-day return policy on new, unfired firearms
- ✔ Secure checkout with encrypted payment
Browse more: Semi-Auto Handguns | Concealed Carry Pistols | Optics-Ready Handguns
Last updated: April 2026
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