A Low Resistance Wiring Harness allows power to travel more efficiently (and consistently) from the battery to the AEG's motor. This translates to more reliable, more efficient performance and possibly even a slight increase in firing rate. Whether you are looking to install some performance upgrades for which your stock harness just won't cut it, or you just want to improve the performance of your stock AEG, this Echo1 harness is a great option at a great price. If your stock wiring harness is damaged or needs to be replaced, consider upgrading to a low resistance harness instead. This wiring harness is compatible with Echo1 M16 style AEGs (and may also work with other manufacturer's AEGs).