ow available in a convenient 3-pack, the new AKR ERG/AEG 3 30/60 mag has the ability to change capacities from 30 to 60 rounds, allowing the user to train with a realistic round count, or to dominate the airsoft field. These mags fits all current and future AKR Series ERGs and AEG 3, and feature a new, user-friendly capacity switch on the bottom of the magazine!