Ensure your not left out on the battlefield stranded with no ammo, by picking yourself up an extra TWI 150rd Magazine for your RPK-74 and other compatible AK series AEG rifles. Mid-Capacity magazines offer stealth operation by eliminating BB rattle often experienced with Hi-Cap magazines. The High Tension Internal Spring, which is similar to a real steel magazine, offers smoother BB feeding than Hi-Cap magazine which results in less jams. Mid-Capacity magazines offer a more realistic game play, as 470rd magazines do not exist in real life warfare. Due to the design of all Mid-Cap magazines, they function better once they are broken in and the spring becomes more flexible and can be manually broken in by spraying some light silicone oil into the magazine and loading and unloading the magazine couples times allowing perfectly smooth function, every time.