Grand Power P40 10mm DA/SA P-Series Pistol – Rotating-Barrel, Full-Size, Early U.S. Import
The Grand Power P40 pairs 10mm Auto power with the brand’s signature rotating-barrel locking system, delivering smoother recoil impulse in a durable, duty-sized package. This early U.S. import, serial GMA0078, brings fully ambidextrous controls, conversion-barrel compatibility, and a reinforced polymer frame with steel rail inserts—all features that set it apart for shooters who want toughness without excess weight.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Minimal markings from previous handling and use. Bore remains bright and clean.
What’s Included
- Grand Power factory hard case (black polymer)
- Two 14-round factory steel double-stack magazines
The P40’s rotating-barrel system cams the barrel instead of tilting it, spreading recoil over a longer arc and keeping the muzzle flatter during rapid fire. Chambered in 10mm, it offers 14+1 capacity in a standard-length 4.25-inch chrome-moly barrel.
Fully ambidextrous controls—slide stops, magazine release, and manual safeties—let right- and left-handed shooters run the pistol without modification. The reversible mag release adds further flexibility.
The Mk12 frame is molded from glass-fiber-reinforced polyamide with steel inserts that carry the slide rails, ensuring long service life while keeping weight manageable. A steel takedown pin and true accessory rail round out the frame.
This example comes from the initial Global Ordnance import run, marked by the low GMA0078 serial number. It accepts factory .40 S&W and .357 SIG conversion barrels, offering versatility for shooters who want multiple calibers in one platform.



