This is the factory OEM SIG P365 X-Macro 9mm 21-round extended magazine! That's right...this is a 21-round magazine for your P365 series pistol!

Constructed from anti-friction-coated steel, this magazine is ready to withstand some serious use. Inside, you’ll find an anti-tilt polymer follower and high quality steel spring that work together perfectly to ensure your rounds are properly aligned and feed flawlessly. On the back of the magazine are precision cut rear facing witness holes that allow you to easily keep track of all 21 rounds. So whether you’re using your P365 series pistol for home defense, competition, or simple range time, these 21 round "stendo" magazines are sure to please!

Fitment: P365, P365X, P365XL, P365X-Macro, P365 Fuse.

Specifications: Caliber: 9mm, Capacity: 21 Rounds, Body Material: Steel, Floorplate: Plastic Extended Baseplate.

This is for one OEM SIG SAUER P365X, MACRO, AND FUSE 21 round magazine.