Evike G&P 130 Rounds Metal Mid-Cap No Winding Magazine For M4 M16 Series Airsoft AEG - Black - (25338) Realistic and accurate; Perfect for Mil-sim and training events Great feeding compared to existing mid-cap magazines Full metal construction High 130 round capacity Instruction: Due the to design of ALL mid-cap magazine, it will require loading and unloading a few times to "break it in" and to perfect the feeding