This is a 3-D printed battery extension for the EMG auto bot speed loader allows you the use of a standard AEG battery Lipo AEG battery. It is designed to slip on and off, but reinforced where it needs to be as a lot of pressure is put on the front. The front side there is a hook which you put in first and the back will just slide in. It has been designed this way to reduce the risk of snapping the support legs. As this is a 3-D printed product and is made to order we do not accept returns or refunds Made from PETG
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