Grand Power P1S Mk23 9mm Luger 3.66" 12+1 Stainless DA/SA Pistol

The Grand Power P1S Mk23 (UPC 8588005944663) is a compact DA/SA hammer-fired 9mm Luger pistol manufactured in Slovakia and imported by Global Ordnance. The "S" designation indicates a 12-round magazine capacity for compliance in capacity-restricted jurisdictions. The Mk23 series is Grand Power's optics-ready generation — the stainless steel slide is factory-milled for micro red dot mounting.

The P1S Mk23 uses Grand Power's signature rotary-locking barrel system. Unlike the tilting-barrel designs found in most polymer-frame pistols, the P1S barrel rotates inside the slide to lock and unlock. This keeps the bore axis aligned throughout the cycle, producing noticeably less muzzle flip and felt recoil than comparable tilting-barrel pistols.

The DA/SA action provides a long, deliberate double-action first pull followed by a shorter, lighter single-action pull for subsequent shots. A frame-mounted manual thumb safety allows the pistol to be carried cocked-and-locked in single action or decocked for a double-action first shot. A passive firing pin block adds drop safety.

The 3.66-inch bull barrel is machined from stainless steel and requires no bushing or link. The bushingless design simplifies takedown and reassembly while providing consistent lockup and accuracy.

The stainless steel slide features the enhanced Mk23-series serrations — deep, aggressive cuts front and rear for positive manipulation during press checks and malfunction clearance. The optics-ready cut on top of the slide accepts micro red dots via included adapter plates. Fixed iron sights are installed from the factory.

The polymer frame includes a Picatinny accessory rail molded into the dust cover. All controls — slide stop, magazine release, manual safety — are fully ambidextrous.

Key Features

• Rotary-locking barrel system reduces felt recoil and muzzle flip for faster, more accurate follow-up shots
• DA/SA hammer-fired action with manual thumb safety — carry cocked-and-locked or decocked
• Optics-ready Mk23 slide with adapter plates included
• 12+1 capacity in 9mm Luger for compliance in capacity-restricted jurisdictions
• 3.66-inch stainless steel bushingless bull barrel
• Stainless steel slide with enhanced Mk23-series front and rear serrations
• Fully ambidextrous slide stop, magazine release, and manual safety
• Picatinny accessory rail for weapon lights and lasers
• Fixed iron sights installed from the factory
• Passive firing pin block for drop safety
• Manufactured in Slovakia, imported by Global Ordnance