As experts in this space, I would suggest not gluing this part and making sure that you replace it with a good injection-molded replacement, not a 3D-printed one since those aren't strong enough. In most cases, the U metal locking mechanism will also be lost for some reason they magically disappear so make sure you get a part with that part included. If you need the part let us know we sell them on our site. We also do the repair service if you don't want to repair yourself. We have YouTube videos showing you how to repair yourself if you need them let me know. Also, XM4 has three color schemes so make sure you get the color you need if you are not picky you can do the black one like most people do.