I worked for Ruger for a number of years. Our guns had a lifetime warranty on many of the parts and people could ship them to us for repair. It was a bit of a hassle for the owner since it had to be shipped to and from a dealer with a Federal Firearms License and it was a 30-60 day turnaround. The design on that Glock is very similar to the Ruger but that particular part is not one you want to try and replace yourself if you have no repair experience. They might be willing to send you the part if it is covered then you could find a local gunsmith to repair it. If I remember right that part on the Ruger is called an "Ejector". You just happened to get a faulty part, the tensile strength was probably off from what it should be. I own the same gun as well as a Ruger SR9 full size and I've put well over 1000 rounds through both of them and NEVER had either one jam. I did get some bad ammo once and had a few squib rounds but no jams. Just bad luck on that one.