Evike 6mmProShop Pistol/SMG/Rifle-Sized Mag Airsoft BB Speed Loader Holds 450 Rounds; 1:1 Scale / Fits all AR-15 / M4 / M16 magazine pouches perfectly Easier to use gas magazine adapter included; Convenient storage compartment to store gas magazine adapter when not in use Translucent, allows you to see how much firepower is remaining BB agitator and extended plunger assists with feeding Reinforced aluminum feeding nozzle resists chipping, splitting, and warping