This is the Grand Power K100, X-CALIBUR 9mm 10-round magazine. 

If you’re stuck in a restricted state and need a replacement or spare magazine for your Grand Power pistol, you’re in luck!

This factory magazine is constructed from high-quality steel and features an anti-tilt polymer follower for superior durability and reliability. You’ll also find side-facing witness holes that let you keep track of your remaining capacity at a glance.

Whether your Grand Power pistol goes with you everywhere or only makes it out for a range session every now and then, you can never have too many magazines! 

At only ten rounds a piece, you might as well order a few!