PTS Syndicate - EPM Enhanced Polymer AEG Mid-Cap Magazine - Black is a medium capacity (Mid Cap) magazine designed for use with Airsoft 6mm Electic Guns (AEG). The magazine is constructed from tough DuPont Zytel Polymer, making it extremely durable and robust with a great finish. The bottom of the magazine features a rubber ridged base plate, allowing the weapons operator to pivot on magazine point and reduce slipages whilst prone. The angled base is designed to be still comfortable when drawn from pouches whilst not inhibiting the closure of pouch flaps and tops. The side of the magazine features a rounds window, which shows dummy 5.56 rounds, and allows you to see how many BB you have left in your magazine. The BB Guide of the magazine is coloured bright Orange, allowing you to see the ammount of rounds remaining, from the top, side and lower part of the magazine, allowing you to pick up the mag and letting you know exactly how many rounds are remaining.