Not a gen2, had it for years. Been a good can overall. 45, so it was on a HK45C for a long time and at times a 9mm HK combat competition, even some subsonic 300 blackout. Ran about 100 rounds of 9mm out of a G19 today, mostly blazer brass 115 but some 148 HST to check zero and had this happen. Everything ran, functioned and sounded like it should but I stopped as I saw it get to this point. Took some pics then some pics after I removed it. Looks like it had some sort of epoxy on it, though half ass applied. Any thoughts on what it's suposed to be and thoughts on just JB welding the bitch back in?