PTS 150rd Mid-Cap EPM Enhanced Polymer Magazine For M4 M16 Series AEG Rifles Airsoft BlackPTS 150rd Mid Cap EPM Enhanced Polymer Magazine For M4 M16 Series AEG Rifles Airsoft Made out of Dupont Zytel High Performance Reinforced Polymer. 2023 New Version. For those who don't like the low capacity standard AEG Magazine, but yet hate winding and the rattling from High Capacity Magazine. 150rd of loading capacity are enough for most competition and skirmish airsoft game. No more Plastic Bullet shaking which essential for intrusion during