The Shield Arms CZP10CME5BLK is a Magazine Extension designed for the CZ P10C/P07 pistols. This impressive accessory increases the capacity of your pistol, providing an additional 5 rounds of 9mm and 4 rounds of 40 S&W. Unique to Shield Arms is the easy access floor plate design. This innovative feature permits straightforward access to the spring and follower, eliminating the need to detach the extension from the magazine body.