This is a CZ P-10 double stack retainer for use on a Standard (9mm Luger) or Pro MagPump 9mm Magazine Loader.

This is one of the six adapters that come with the original purchase of the 9mm Magazine Loader.

Just insert this retainer into the MagPump and load ammo fast and efficiently.

You must have a standard or Pro MagPump 9mm Magazine Loader to use this item.

Lifetime Warranty. Made in the USA.