its a decent 3-D print job. none of the loose strings some of the 3-D prints have. I would have preferred injection molded plastic but hey whatever. if your doing a Stryfe mod and want to put a big battery in it, this is a nice option. otherwise you need to look at getting a big battery door to make anything fit in the old battery tray area. it seems pretty strong but let's see how it holds up under rough play. ill do an update if it breaks in half.