I’ve had this pistol for 3 to 4 years and love it. That said, I noticed something a bit concerning when I broke it down to Royal it this evening. I noticed on the front rails there was some wear. Normally, I wouldn’t be concerned, however when I ran my finger nail across it, it caught. I haven’t had any other issues with the pistol. I’m just a bit concerned. I’ve included a picture. I know it’s not the best. You may have to zoom in on the picture. Is this normal wear? Or, does it need to go back to HK?