Fixed stock for your MG5. You can use this stock to convert your MG5 into a fixed stock version. Best of all, this fixed stock will store a large battery to power upgrades. Note that installation of this stock onto an MG5 with front wiring will require rewiring to store the battery in this fixed stock. Fits Classic Army, Marui, Echo and ICS MP5 series as well as the GSG5! Get a large battery to go into this fixed stock. If you need to perform re-wiring for the battery, then you may also need to purchase a male-female connector extension cable.