Elite Force Umarex Amoeba AM4-M4 Mid Cap 140 Round Magazines - Black
Heavy-duty build quality
Built-in flip-out magazine pull tab
Textured sides for positive grip
Mock bullet window
High strength polymer construction
Compatibility: For ARES, Tokyo Marui, G&P and other compatible M4/M16 series Airsoft AEG rifles Capacity: 140rds
Why Mid-Cap Magazines? Mid-Capacity magazines offer stealth operation by eliminating BB rattle often experienced with Hi-Caps. They feed smoother than Hi-Caps due to their high tension internal spring, similar to a real steel magazine. Since 470 round Hi-Capacity magazines don't exist in real life, a good amount of Mil-Sim players prefer Mid-Cap magazines for an even more realistic type of gaming experience.
Due to the design of all Mid-Cap magazines, they actually function better once you break them in. To do so spray some light silicone oil into the magazine, load and unload it a few times until BB's feed smoothly. This process breaks in the internal spring allowing it to function without problems each and every time.