Caldwell's AK Mag Charger holds 50 rounds from any ammo box. Simply align the bullet tips with holes in the Mag Charger and dump them in. Specially designed indexing tabs align all the rounds in the loader. Insert your AK magazine into the charger, operate the plunger and with each stroke 5 rounds are loaded until the magazine. Made from highly durable polycarbonate construction, it is compatible with most 7.62x39 ammo.