AEG Mid-Cap magazines use springs and channels that course through the entire magazine. The spring is what propels the BBs into your hop-up chamber. In order for the magazine to have a consistent and steady feed, the tension of the spring inside the magazine plays a major role for this to work properly.
Little did people know, keeping BBs loaded in the magazine for a prolonged period of time could cause the spring to lose its tension. When the spring is being compressed to its limits or beyond, it will either resist the compression force or deform in order to alleviate the stress built-up within the spring. Hence, when BBs are kept within a magazine for a long period of time, the magazine may not feed properly upon usage, as the spring inside the magazine may have already deformed. Good quality springs will stand up to this better but many cheap magazines use inferior materials which may exacerbate this problem.
In order to reduce the risk of the magazine spring deforming, it is best to release all the BBs from all your magazines after each game so the spring will not be compressed during storage. We understand loading mid-cap magazines could be tiring; to solve this matter, we suggest the M12 Sidewinder Speed Loader by Odin Innovations as they are the world’s fastest speed loader. For more information, click on the link below: