The PMAG D-50 MP boasts many of the proven features of our other 9mm drums such as the PMAG D-50(R) EV9(TM) - CZ Scorpion(R) EVO 3. Providing 50-round capacity, the unique drum configuration keeps the height of the magazine manageable, allowing for prone firing and easier storage. For easy loading, it includes a ratcheting loading lever that removes tension from the internal spring.